diff --git a/app/controllers/api/v1/xudts_controller.rb b/app/controllers/api/v1/xudts_controller.rb
index 0600c8a04..76ef3e728 100644
--- a/app/controllers/api/v1/xudts_controller.rb
+++ b/app/controllers/api/v1/xudts_controller.rb
@@ -15,7 +15,11 @@ def index
 
         if params[:tags].present?
           tags = parse_tags
-          scope = scope.joins(:xudt_tag).where("xudt_tags.tags && ARRAY[?]::varchar[]", tags).select("udts.*") unless tags.empty?
+          if params[:union].present?
+            scope = scope.joins(:xudt_tag).where("xudt_tags.tags && ARRAY[?]::varchar[]", tags).select("udts.*") unless tags.empty?
+          else
+            scope = scope.joins(:xudt_tag).where("xudt_tags.tags @> array[?]::varchar[]", tags).select("udts.*") unless tags.empty?
+          end
         end
 
         if stale?(scope)
diff --git a/app/controllers/api/v2/nft/collections_controller.rb b/app/controllers/api/v2/nft/collections_controller.rb
index c007a7cff..7d68bdf18 100644
--- a/app/controllers/api/v2/nft/collections_controller.rb
+++ b/app/controllers/api/v2/nft/collections_controller.rb
@@ -9,7 +9,11 @@ def index
           end
           if params[:tags].present?
             tags = parse_tags
-            scope = scope.where("tags && ARRAY[?]::varchar[]", tags) unless tags.empty?
+            if params[:union].present?
+              scope = scope.where("tags && ARRAY[?]::varchar[]", tags) unless tags.empty?
+            else
+              scope = scope.where("tags @> array[?]::varchar[]", tags) unless tags.empty?
+            end
           end
           pagy, collections = pagy(sort_collections(scope))
 
diff --git a/test/controllers/api/v1/xudts_controller_test.rb b/test/controllers/api/v1/xudts_controller_test.rb
index 7c2af0c92..17c0fecd8 100644
--- a/test/controllers/api/v1/xudts_controller_test.rb
+++ b/test/controllers/api/v1/xudts_controller_test.rb
@@ -29,12 +29,23 @@ class XudtsControllerTest < ActionDispatch::IntegrationTest
         assert_equal 1, json["data"].length
       end
 
+      test "filter union xudt by symbol and tags" do
+        udt = create(:udt, :xudt, symbol: "CKBB")
+        create(:xudt_tag, udt:, tags: ["duplicate", "layer-1-asset", "supply-limited"])
+        udt2 = create(:udt, :xudt, symbol: "RPGG")
+        create(:xudt_tag, udt: udt2, tags: ["duplicate", "layer-2-asset", "supply-limited"])
+        valid_get api_v1_xudts_url, params: { symbol: "CKBB", tags: "duplicate,supply-limited", union: true }
+        assert_response :success
+        assert_equal "CKBB", json["data"].first["attributes"]["symbol"]
+        assert_equal ["duplicate", "layer-1-asset", "supply-limited"], json["data"].first["attributes"]["xudt_tags"]
+      end
+
       test "filter xudt by symbol and tags" do
         udt = create(:udt, :xudt, symbol: "CKBB")
         create(:xudt_tag, udt:, tags: ["duplicate", "layer-1-asset", "supply-limited"])
         udt2 = create(:udt, :xudt, symbol: "RPGG")
         create(:xudt_tag, udt: udt2, tags: ["duplicate", "layer-2-asset", "supply-limited"])
-        valid_get api_v1_xudts_url, params: { symbol: "CKBB", "tags": "duplicate,supply-limited" }
+        valid_get api_v1_xudts_url, params: { symbol: "CKBB", tags: "layer-1-asset,supply-limited,NOT EXIST" }
         assert_response :success
         assert_equal "CKBB", json["data"].first["attributes"]["symbol"]
         assert_equal ["duplicate", "layer-1-asset", "supply-limited"], json["data"].first["attributes"]["xudt_tags"]
diff --git a/test/controllers/api/v2/nft/collections_controller_test.rb b/test/controllers/api/v2/nft/collections_controller_test.rb
index 15def51e2..80f5c7a7a 100644
--- a/test/controllers/api/v2/nft/collections_controller_test.rb
+++ b/test/controllers/api/v2/nft/collections_controller_test.rb
@@ -13,15 +13,24 @@ class NFT::CollectionsControllerTest < ActionDispatch::IntegrationTest
         assert_equal ["invalid"], JSON.parse(response.body)["data"].last["tags"]
       end
 
-      test "should filter by tags" do
+      test "should filter by union tags" do
         create :token_collection, name: "token1", tags: ["layer-1-asset", "rgbpp-compatible"]
         create :token_collection, name: "token2", tags: ["layer-1-asset", "rgbpp-compatible"]
 
-        get api_v2_nft_collections_url, params: { tags: "layer-1-asset,rgbpp-compatible" }
+        get api_v2_nft_collections_url, params: { tags: "layer-1-asset,rgbpp-compatible", union: true }
         assert_response :success
         assert_equal JSON.parse(response.body)["data"].size, 2
       end
 
+      test "should filter by tags but not match" do
+        create :token_collection, name: "token1", tags: ["layer-1-asset", "rgbpp-compatible"]
+        create :token_collection, name: "token2", tags: ["layer-1-asset", "rgbpp-compatible"]
+
+        get api_v2_nft_collections_url, params: { tags: "layer-1-asset,invalid" }
+        assert_response :success
+        assert_equal JSON.parse(response.body)["data"].size, 0
+      end
+
       test "sort by block_timestamp asc" do
         block1 = create(:block, :with_block_hash, timestamp: 10.days.ago.to_i * 1000)
         block3 = create(:block, :with_block_hash, timestamp: 1.day.ago.to_i * 1000)