diff --git a/app/api/agent-workflow/reference-search/route.ts b/app/api/agent-workflow/reference-search/route.ts
index 077c9e363..db7174cee 100644
--- a/app/api/agent-workflow/reference-search/route.ts
+++ b/app/api/agent-workflow/reference-search/route.ts
@@ -18,6 +18,7 @@ const querySchema = z.object({
   keyword: z.string().trim().min(1).max(64),
   queryType: z.enum(["sku", "spu"]).default("spu"),
   target: z.enum(["main", "detail", "sku"]),
+  brandName: z.string().trim().max(64).optional(),
   storeName: z.string().trim().max(64).optional(),
 });
 
@@ -25,6 +26,10 @@ type ExternalTaskDetailCandidate = {
   materialId?: string;
   taskNo?: string;
   productModel?: string;
+  brandName?: string;
+  brand?: string;
+  productBrand?: string;
+  brand_name?: string;
   categoryName?: string;
   shopName?: string;
   sceneName?: string;
@@ -44,6 +49,9 @@ type ExternalTaskDetailResponse = {
     resourceType?: string;
     spu?: string | null;
     sku?: string | null;
+    brandName?: string | null;
+    brand?: string | null;
+    productBrand?: string | null;
     categoryName?: string | null;
     shopName?: string | null;
     candidateCount?: number;
@@ -59,7 +67,7 @@ function normalizeBaseUrl(value: string) {
   return String(value || "").trim().replace(/\/+$/, "");
 }
 
-function normalizeShopName(value: unknown) {
+function normalizeComparableName(value: unknown) {
   return String(value || "")
     .trim()
     .toLowerCase()
@@ -104,12 +112,21 @@ function normalizeCandidate(
   const materialId = String(value.materialId || "").trim() || null;
   const sceneName = String(value.sceneName || "").trim() || null;
   const id = taskNo || materialId || `candidate-${index + 1}`;
+  const brandName =
+    String(
+      value.brandName ||
+        value.brand ||
+        value.productBrand ||
+        value.brand_name ||
+        ""
+    ).trim() || null;
 
   return {
     id,
     materialId,
     taskNo,
     productModel: String(value.productModel || "").trim() || null,
+    brandName,
     categoryName: String(value.categoryName || "").trim() || null,
     shopName: String(value.shopName || "").trim() || null,
     sceneName,
@@ -171,23 +188,39 @@ function sortCandidatesByUploadedAtDesc(candidates: AgentModeReferenceCandidate[
   });
 }
 
-function isCandidateMatchedStore(
+function isCandidateMatchedBrand(
   candidate: AgentModeReferenceCandidate,
-  storeName?: string
+  brandName?: string
 ) {
-  const normalizedRequestedStore = normalizeShopName(storeName);
-  if (!normalizedRequestedStore) return true;
+  const normalizedRequestedBrand = normalizeComparableName(brandName);
+  if (!normalizedRequestedBrand) return true;
 
-  const normalizedShopName = normalizeShopName(candidate.shopName);
-  const normalizedCategoryName = normalizeShopName(candidate.categoryName);
+  const normalizedBrandName = normalizeComparableName(candidate.brandName);
+  if (!normalizedBrandName) return false;
 
   return (
-    normalizedShopName === normalizedRequestedStore ||
-    normalizedCategoryName === normalizedRequestedStore ||
-    (Boolean(normalizedShopName) && normalizedShopName.includes(normalizedRequestedStore)) ||
-    (Boolean(normalizedShopName) && normalizedRequestedStore.includes(normalizedShopName)) ||
-    (Boolean(normalizedCategoryName) && normalizedCategoryName.includes(normalizedRequestedStore)) ||
-    (Boolean(normalizedCategoryName) && normalizedRequestedStore.includes(normalizedCategoryName))
+    normalizedBrandName === normalizedRequestedBrand ||
+    normalizedBrandName.includes(normalizedRequestedBrand) ||
+    normalizedRequestedBrand.includes(normalizedBrandName)
+  );
+}
+
+function filterCandidatesByBrand(
+  candidates: AgentModeReferenceCandidate[],
+  brandName?: string
+) {
+  const normalizedRequestedBrand = normalizeComparableName(brandName);
+  if (!normalizedRequestedBrand) return candidates;
+
+  const hasBrandMetadata = candidates.some((candidate) =>
+    Boolean(normalizeComparableName(candidate.brandName))
+  );
+  if (!hasBrandMetadata) {
+    return candidates;
+  }
+
+  return candidates.filter((candidate) =>
+    isCandidateMatchedBrand(candidate, normalizedRequestedBrand)
   );
 }
 
@@ -202,6 +235,7 @@ export async function GET(request: NextRequest) {
       keyword: request.nextUrl.searchParams.get("keyword"),
       queryType: request.nextUrl.searchParams.get("queryType") || "spu",
       target: request.nextUrl.searchParams.get("target"),
+      brandName: request.nextUrl.searchParams.get("brandName") || undefined,
       storeName: request.nextUrl.searchParams.get("storeName") || undefined,
     });
 
@@ -254,11 +288,11 @@ export async function GET(request: NextRequest) {
       );
     }
 
-    const requestedStoreName = String(parsed.storeName || "").trim();
-    const normalizedCandidates = sortCandidatesByUploadedAtDesc(
+    const requestedBrandName = String(parsed.brandName || "").trim();
+    const sortedCandidates = sortCandidatesByUploadedAtDesc(
       (upstreamResult.data.candidates || []).map((item, index) => normalizeCandidate(item, index))
-    )
-      .filter((candidate) => isCandidateMatchedStore(candidate, requestedStoreName))
+    );
+    const normalizedCandidates = filterCandidatesByBrand(sortedCandidates, requestedBrandName)
       .filter((candidate) => getRenderableCandidateTargetUrls(candidate, parsed.target).length > 0);
 
     if (normalizedCandidates.length === 0) {
@@ -266,15 +300,15 @@ export async function GET(request: NextRequest) {
         {
           success: false,
           error: {
-            code: requestedStoreName
-              ? "STORE_REFERENCE_NOT_FOUND"
+            code: requestedBrandName
+              ? "BRAND_REFERENCE_NOT_FOUND"
               : parsed.target === "main"
                 ? "MAIN_REFERENCE_NOT_FOUND"
                 : parsed.target === "detail"
                   ? "DETAIL_REFERENCE_NOT_FOUND"
                   : "SKU_REFERENCE_NOT_FOUND",
-            message: requestedStoreName
-              ? `当前店铺「${requestedStoreName}」下没有可用的${
+            message: requestedBrandName
+              ? `当前品牌「${requestedBrandName}」下没有可用的${
                   parsed.target === "main"
                     ? "主图参考图"
                     : parsed.target === "detail"
@@ -306,6 +340,16 @@ export async function GET(request: NextRequest) {
         target: parsed.target,
         matchedSpu: String(upstreamResult.data.spu || "").trim() || null,
         matchedSku: String(upstreamResult.data.sku || "").trim() || null,
+        brandName:
+          selectedCandidate.brandName ||
+          String(
+            upstreamResult.data.brandName ||
+              upstreamResult.data.brand ||
+              upstreamResult.data.productBrand ||
+              ""
+          ).trim() ||
+          requestedBrandName ||
+          null,
         categoryName: selectedCandidate.categoryName || String(upstreamResult.data.categoryName || "").trim() || null,
         shopName: selectedCandidate.shopName || String(upstreamResult.data.shopName || "").trim() || null,
         candidateCount: normalizedCandidates.length,
diff --git a/components/agents/AgentGenerationWorkspaceDarkV2.tsx b/components/agents/AgentGenerationWorkspaceDarkV2.tsx
index 87fd48d14..da43320d1 100644
--- a/components/agents/AgentGenerationWorkspaceDarkV2.tsx
+++ b/components/agents/AgentGenerationWorkspaceDarkV2.tsx
@@ -244,6 +244,7 @@ interface AgentModeReferenceSearchResponse {
     target: AgentTaskDetailReferenceSource;
     matchedSpu?: string | null;
     matchedSku?: string | null;
+    brandName?: string | null;
     categoryName?: string | null;
     shopName?: string | null;
     candidateCount: number;
@@ -1346,7 +1347,7 @@ export function AgentGenerationWorkspaceDarkV2({
   const skuReferenceTarget = presetModeConfig.sku.referenceImageSource;
   const detailReferenceSourceLabel = getTaskDetailReferenceSourceLabel(detailReferenceTarget);
   const skuReferenceSourceLabel = getTaskDetailReferenceSourceLabel(skuReferenceTarget);
-  const workflowStoreName = String(workflowContext?.store || "").trim();
+  const workflowBrandName = String(workflowContext?.brand || "").trim();
   const shouldAllowModelOverride =
     isDirectModelGenerationMode || !isSceneGenerationPreset || presetModeConfig.scene.allowModelOverride;
   const brandModelAttachmentKeys = useMemo(() => {
@@ -3968,8 +3969,8 @@ export function AgentGenerationWorkspaceDarkV2({
   }
   const handleDetailReplacementSearch = useCallback(async () => {
     const normalized = detailReplacementQueryInput.trim().toUpperCase();
-    if (!workflowStoreName) {
-      toast.error("请先在第一步完成品牌和店铺选择后再查询参考图");
+    if (!workflowBrandName) {
+      toast.error("请先在第一步完成品牌选择后再查询参考图");
       return;
     }
     if (!normalized) {
@@ -3988,8 +3989,8 @@ export function AgentGenerationWorkspaceDarkV2({
         queryType: "spu",
         target: detailReferenceTarget,
       });
-      if (workflowStoreName) {
-        searchParams.set("storeName", workflowStoreName);
+      if (workflowBrandName) {
+        searchParams.set("brandName", workflowBrandName);
       }
       const response = await fetch(
         `/api/agent-workflow/reference-search?${searchParams.toString()}`,
@@ -4026,7 +4027,7 @@ export function AgentGenerationWorkspaceDarkV2({
     detailReferenceTarget,
     detailReplacementQueryInput,
     updateDetailReplacementState,
-    workflowStoreName,
+    workflowBrandName,
   ]);
   const handleSelectDetailReplacementCandidate = useCallback((candidateId: string) => {
       updateDetailReplacementState((current) => {
@@ -4068,8 +4069,8 @@ export function AgentGenerationWorkspaceDarkV2({
   );
   const handleSkuReplacementSearch = useCallback(async () => {
     const normalized = skuReplacementQueryInput.trim().toUpperCase();
-    if (!workflowStoreName) {
-      toast.error("请先在第一步完成品牌和店铺选择后再查询参考图");
+    if (!workflowBrandName) {
+      toast.error("请先在第一步完成品牌选择后再查询参考图");
       return;
     }
     if (!normalized) {
@@ -4088,8 +4089,8 @@ export function AgentGenerationWorkspaceDarkV2({
         queryType: skuReplacementQueryType,
         target: skuReferenceTarget,
       });
-      if (workflowStoreName) {
-        searchParams.set("storeName", workflowStoreName);
+      if (workflowBrandName) {
+        searchParams.set("brandName", workflowBrandName);
       }
       const response = await fetch(
         `/api/agent-workflow/reference-search?${searchParams.toString()}`,
@@ -4135,7 +4136,7 @@ export function AgentGenerationWorkspaceDarkV2({
     skuReplacementQueryInput,
     skuReplacementQueryType,
     updateSkuReplacementState,
-    workflowStoreName,
+    workflowBrandName,
   ]);
   const handleSelectSkuReplacementCandidate = useCallback((candidateId: string) => {
     updateSkuReplacementState((current) => {
@@ -5115,8 +5116,8 @@ export function AgentGenerationWorkspaceDarkV2({
                     SPU /
                     {detailReplacementSearchState.lastQuery ||
                       detailReplacementQueryInput.trim().toUpperCase()}
-                    {workflowStoreName ? (
-                      <span className="ml-2 text-white/40">{`店铺 / ${workflowStoreName}`}</span>
+                    {workflowBrandName ? (
+                      <span className="ml-2 text-white/40">{`品牌 / ${workflowBrandName}`}</span>
                     ) : null}
                     <span className="ml-2 text-emerald-200/70">
                       {`已接入真实${detailReferenceSourceLabel}参考图接口`}
@@ -5158,6 +5159,7 @@ export function AgentGenerationWorkspaceDarkV2({
                         const summaryBadges = [
                           `${detailReferenceSourceLabel}`,
                           `${getCandidateTargetCount(candidate, detailReferenceTarget)}张`,
+                          candidate.brandName || null,
                           candidate.categoryName || null,
                         ].filter((item): item is string => Boolean(item));
                         return (
@@ -5221,6 +5223,9 @@ export function AgentGenerationWorkspaceDarkV2({
                                   </div>
                                 </div>
                                 <div className="mt-1.5 flex flex-col gap-0.5 text-[9px] text-white/50">
+                                  {candidate.brandName ? (
+                                    <div className="truncate">品牌：{candidate.brandName}</div>
+                                  ) : null}
                                   <div className="truncate">店铺：{candidate.shopName || "未记录"}</div>
                                   <div className="truncate">更新时间：{uploadedAtText}</div>
                                 </div>
@@ -5867,8 +5872,8 @@ export function AgentGenerationWorkspaceDarkV2({
                       {skuReplacementQueryType === "spu" ? "SPU" : "SKU"} /
                       {skuReplacementSearchState.lastQuery ||
                         skuReplacementQueryInput.trim().toUpperCase()}
-                      {workflowStoreName ? (
-                        <span className="ml-2 text-white/40">{`店铺 / ${workflowStoreName}`}</span>
+                      {workflowBrandName ? (
+                        <span className="ml-2 text-white/40">{`品牌 / ${workflowBrandName}`}</span>
                       ) : null}
                       <span className="ml-2 text-emerald-200/70">
                         {`已接入真实${skuReferenceSourceLabel}参考图接口`}
@@ -5930,6 +5935,11 @@ export function AgentGenerationWorkspaceDarkV2({
                                   {formatCandidateMeta(candidate, skuReferenceTarget) || `点击切换这套${skuReferenceSourceLabel}参考图`}
                                 </div>
                                 <div className="flex flex-wrap gap-1.5 text-[11px] text-white/48">
+                                  {candidate.brandName ? (
+                                    <span className="rounded-full bg-white/[0.05] px-2 py-1">
+                                      品牌：{candidate.brandName}
+                                    </span>
+                                  ) : null}
                                   {candidate.shopName ? (
                                     <span className="rounded-full bg-white/[0.05] px-2 py-1">
                                       {candidate.shopName}
diff --git a/types/agent.ts b/types/agent.ts
index 59750c1a9..3cc211715 100644
--- a/types/agent.ts
+++ b/types/agent.ts
@@ -385,6 +385,7 @@ export interface AgentModeReferenceCandidate {
   materialId?: string | null;
   taskNo?: string | null;
   productModel?: string | null;
+  brandName?: string | null;
   categoryName?: string | null;
   shopName?: string | null;
   sceneName?: string | null;