diff --git a/internal/infrastructure/cardobservation/series_runner.go b/internal/infrastructure/cardobservation/series_runner.go
index 0ee473aa..d3fffb64 100644
--- a/internal/infrastructure/cardobservation/series_runner.go
+++ b/internal/infrastructure/cardobservation/series_runner.go
@@ -475,10 +475,11 @@ func (r *SeriesRunner) loadCurrentICCIDs(ctx context.Context, payload cardapp.Se
 	if err != nil {
 		return nil, err
 	}
+	// 显式列名：GORM 默认把 ICCID 映射成 icc_id，不写 tag 时三个值都读不到，本地预期判定永远不成立。
 	var current struct {
-		ICCID   string
-		ICCID19 string
-		ICCID20 *string
+		ICCID   string  `gorm:"column:iccid"`
+		ICCID19 string  `gorm:"column:iccid_19"`
+		ICCID20 *string `gorm:"column:iccid_20"`
 	}
 	err = r.db.WithContext(ctx).Table("tb_device_sim_binding AS binding").
 		Select("card.iccid, card.iccid_19, card.iccid_20").
diff --git a/internal/query/pollingalert/stop_refused.go b/internal/query/pollingalert/stop_refused.go
index 80ec4963..b7309cd4 100644
--- a/internal/query/pollingalert/stop_refused.go
+++ b/internal/query/pollingalert/stop_refused.go
@@ -24,7 +24,7 @@ type StopRefusedFilter struct {
 type StopRefusedRow struct {
 	ID            uint
 	CardID        uint
-	ICCID         string
+	ICCID         string `gorm:"column:iccid"` // 显式列名：GORM 默认映射成 icc_id
 	CarrierID     uint
 	CarrierName   string
 	DeviceID      uint
diff --git a/internal/query/pollingalert/stop_refused_columns_test.go b/internal/query/pollingalert/stop_refused_columns_test.go
new file mode 100644
index 00000000..d2775199
--- /dev/null
+++ b/internal/query/pollingalert/stop_refused_columns_test.go
@@ -0,0 +1,20 @@
+package pollingalert
+
+import (
+	"sync"
+	"testing"
+
+	"gorm.io/gorm/schema"
+)
+
+// GORM 默认把字段 ICCID 映射成 icc_id；查询选的是 a.iccid，必须显式指定列名，否则列表 ICCID 一直为空。
+func TestStopRefusedRowICCIDColumn(t *testing.T) {
+	s, err := schema.Parse(&StopRefusedRow{}, &sync.Map{}, schema.NamingStrategy{})
+	if err != nil {
+		t.Fatalf("parse StopRefusedRow: %v", err)
+	}
+	field := s.LookUpField("ICCID")
+	if field == nil || field.DBName != "iccid" {
+		t.Fatalf("StopRefusedRow.ICCID column = %v, want iccid", field)
+	}
+}
diff --git a/internal/query/recorddisplay/columns_test.go b/internal/query/recorddisplay/columns_test.go
new file mode 100644
index 00000000..7fc7df36
--- /dev/null
+++ b/internal/query/recorddisplay/columns_test.go
@@ -0,0 +1,29 @@
+package recorddisplay
+
+import (
+	"sync"
+	"testing"
+
+	"gorm.io/gorm/schema"
+)
+
+// 防回归：不带 column tag 时 GORM 会把 ICCID 读成 icc_id 列。
+func TestDefaultNamingSplitsICCID(t *testing.T) {
+	type untagged struct{ ICCID string }
+	type tagged struct {
+		ICCID string `gorm:"column:iccid"`
+	}
+	for _, tc := range []struct {
+		name string
+		v    any
+		want string
+	}{{"untagged", &untagged{}, "icc_id"}, {"tagged", &tagged{}, "iccid"}} {
+		s, err := schema.Parse(tc.v, &sync.Map{}, schema.NamingStrategy{})
+		if err != nil {
+			t.Fatal(err)
+		}
+		if got := s.LookUpField("ICCID").DBName; got != tc.want {
+			t.Fatalf("%s: DBName = %q, want %q", tc.name, got, tc.want)
+		}
+	}
+}