diff --git a/cache/query.go b/cache/query.go
index 7338b19..12998f3 100644
--- a/cache/query.go
+++ b/cache/query.go
@@ -224,6 +224,16 @@ func (h *queryHandler) AfterQuery() func(db *gorm.DB) {
 			}
 
 			if db.Error == nil {
+				destValue := reflect.Indirect(reflect.ValueOf(db.Statement.Dest))
+				// 如果是结构体应该能提主键出来
+				// 如果是数组需要判断内部元素是不是结构体，不是结构体的都提不了主键
+				if destValue.Kind() == reflect.Slice || destValue.Kind() == reflect.Array {
+					if (destValue.Type().Elem().Kind() == reflect.Pointer && destValue.Type().Elem().Elem().Kind() != reflect.Struct) ||
+						(destValue.Type().Elem().Kind() != reflect.Pointer && destValue.Type().Elem().Kind() != reflect.Struct) {
+						return
+					}
+				}
+
 				// error is nil -> cache not hit, we cache newly retrieved data
 				primaryKeys, objects := getObjectsAfterLoad(db)
 
@@ -311,7 +321,7 @@ func (h *queryHandler) AfterQuery() func(db *gorm.DB) {
 		h.fillCallAfterQuery(db)
 
 		// 下面处理命中了缓存的情况
-		// 有以下几种err是专门用来传状态的：正常的cachehit 这种情况不存在error
+		// 有以下几种err是专门用来传状态的：正常的cacheHit 这种情况不存在error
 		// RecordNotFoundCacheHit 这种情况只会在notfound之后出现
 		// SingleFlightHit 这种情况下error中除了SingleFlightHit还可能会存在其他error来自gorm的error
 		// 且遇到任何一种hit我们都可以认为是命中了缓存 同时只可能命中至多两个hit（single+其他
diff --git a/test/functionality_test.go b/test/functionality_test.go
index 9e1dc48..d568cc0 100644
--- a/test/functionality_test.go
+++ b/test/functionality_test.go
@@ -14,6 +14,8 @@ func TestPrimaryCacheFunctionality(t *testing.T) {
 
 		testPrimaryFind(primaryCache, primaryDB)
 
+		testPluck(primaryCache, primaryDB)
+
 		testPrimaryUpdate(primaryCache, primaryDB)
 
 		testPrimaryDelete(primaryCache, primaryDB)
diff --git a/test/model.go b/test/model.go
index 7db7e54..a479420 100644
--- a/test/model.go
+++ b/test/model.go
@@ -10,6 +10,7 @@ type TestModel struct {
 	Value6    int64  `gorm:"column:value6"`
 	Value7    int64  `gorm:"column:value7"`
 	Value8    int64  `gorm:"column:value8"`
+	Value9    string `gorm:"column:value9"`
 	PtrValue1 *int64 `gorm:"column:ptr_value1"`
 }
 
diff --git a/test/plunk_test.go b/test/plunk_test.go
new file mode 100644
index 0000000..e733947
--- /dev/null
+++ b/test/plunk_test.go
@@ -0,0 +1,16 @@
+package test
+
+import (
+	. "github.com/smartystreets/goconvey/convey"
+
+	"github.com/asjdf/gorm-cache/cache"
+	"gorm.io/gorm"
+)
+
+func testPluck(cache cache.Cache, db *gorm.DB) {
+	var value9 []string
+	result := db.Model(&TestModel{}).Pluck("value9", &value9)
+	So(result.Error, ShouldBeNil)
+	So(len(value9), ShouldEqual, testSize)
+	So(value9[0], ShouldEqual, "1")
+}
diff --git a/test/prepare_test.go b/test/prepare_test.go
index c7c095a..4de59e0 100644
--- a/test/prepare_test.go
+++ b/test/prepare_test.go
@@ -1,6 +1,9 @@
 package test
 
-import "gorm.io/gorm"
+import (
+	"gorm.io/gorm"
+	"strconv"
+)
 
 func PrepareTableAndData(db *gorm.DB) error {
 	err := db.AutoMigrate(&TestModel{})
@@ -21,6 +24,7 @@ func PrepareTableAndData(db *gorm.DB) error {
 			Value6:    int64(i),
 			Value7:    int64(i),
 			Value8:    int64(i),
+			Value9:    strconv.Itoa(i),
 			PtrValue1: &_pValue,
 		}
 		models = append(models, model)