diff --git a/data/status_query.yml b/data/status_query.yml
index 6268ac7b..649dfde4 100644
--- a/data/status_query.yml
+++ b/data/status_query.yml
@@ -95,7 +95,7 @@ query::CheckHorseRegistered:
 query::CheckHorseTakenOut:
   status: pending
 query::CheckIsOpenItemCategory:
-  status: pending
+  status: done
 query::CheckItemShopDecide:
   status: pending
 query::CheckItemShopPorchVacancy:
diff --git a/data/uking_functions.csv b/data/uking_functions.csv
index af66c012..1454ced7 100644
--- a/data/uking_functions.csv
+++ b/data/uking_functions.csv
@@ -40865,7 +40865,7 @@
 0x000000710068ee50,AI_Query_CheckIsOpenItemCategory::ctor,52,_ZN5uking5query23CheckIsOpenItemCategoryC1ERKN4ksys3act2ai5Query7InitArgE
 0x000000710068ee84,AI_Query_CheckIsOpenItemCategory::dtor,20,_ZN5uking5query23CheckIsOpenItemCategoryD1Ev
 0x000000710068ee98,AI_Query_CheckIsOpenItemCategory::dtorDelete,52,_ZN5uking5query23CheckIsOpenItemCategoryD0Ev
-0x000000710068eecc,AI_Query_CheckIsOpenItemCategory::doQuery,40,
+0x000000710068eecc,AI_Query_CheckIsOpenItemCategory::doQuery,40,_ZN5uking5query23CheckIsOpenItemCategory7doQueryEv
 0x000000710068eef4,AI_Query_CheckIsOpenItemCategory::m10,64,_ZN5uking5query23CheckIsOpenItemCategory10loadParamsERKN4evfl8QueryArgE
 0x000000710068ef34,AI_Query_CheckIsOpenItemCategory::loadParams,64,_ZN5uking5query23CheckIsOpenItemCategory10loadParamsEv
 0x000000710068ef74,AI_Query_CheckIsOpenItemCategory::rtti1,204,_ZNK5uking5query23CheckIsOpenItemCategory27checkDerivedRuntimeTypeInfoEPKN4sead15RuntimeTypeInfo9InterfaceE
diff --git a/src/Game/AI/Query/queryCheckIsOpenItemCategory.cpp b/src/Game/AI/Query/queryCheckIsOpenItemCategory.cpp
index 714e561c..c4ec4659 100644
--- a/src/Game/AI/Query/queryCheckIsOpenItemCategory.cpp
+++ b/src/Game/AI/Query/queryCheckIsOpenItemCategory.cpp
@@ -1,5 +1,6 @@
 #include "Game/AI/Query/queryCheckIsOpenItemCategory.h"
 #include <evfl/query.h>
+#include "KingSystem/GameData/gdtCommonFlagsUtils.h"
 
 namespace uking::query {
 
@@ -7,9 +8,8 @@ CheckIsOpenItemCategory::CheckIsOpenItemCategory(const InitArg& arg) : ksys::act
 
 CheckIsOpenItemCategory::~CheckIsOpenItemCategory() = default;
 
-// FIXME: implement
 int CheckIsOpenItemCategory::doQuery() {
-    return -1;
+    return !ksys::gdt::getFlag_IsOpenItemCategory(*mCategory);
 }
 
 void CheckIsOpenItemCategory::loadParams(const evfl::QueryArg& arg) {