diff --git a/ymt_v3/example_test.go b/ymt_v3/example_test.go
new file mode 100644
index 0000000..7ffca0d
--- /dev/null
+++ b/ymt_v3/example_test.go
@@ -0,0 +1,138 @@
+package ymt_v3
+
+import (
+	"context"
+	"fmt"
+	"testing"
+)
+
+// 测试参数（请替换为实际值）
+const (
+	testAppID       = "xxx"
+	testPrivateKey  = `-----BEGIN PRIVATE KEY-----
+xxx
+-----END PRIVATE KEY-----`
+	testPublicKey   = `-----BEGIN PUBLIC KEY-----
+xxx
+-----END PUBLIC KEY-----`
+	testKey         = "xxxx"
+	testEncryptType = "aes"
+	testBaseURL     = "https://gateway.dev.cdlsxd.cn"
+	testActivityNo  = "xxxx"
+)
+
+func TestClient_Order(t *testing.T) {
+	client := NewClient(&Config{
+		AppID:       testAppID,
+		PrivateKey:  testPrivateKey,
+		PublicKey:   testPublicKey,
+		Key:         testKey,
+		EncryptType: testEncryptType,
+		BaseURL:     testBaseURL,
+	})
+
+	resp, err := client.Order(context.Background(), &OrderRequest{
+		OutBizNo:   "order_001",
+		ActivityNo: testActivityNo,
+		Account:    "18666666666",
+		NotifyURL:  "https://notify.example.com/openapi",
+	})
+	if err != nil {
+		t.Fatalf("Order failed: %v", err)
+	}
+	fmt.Printf("Order response: %+v\n", resp)
+}
+
+func TestClient_Query(t *testing.T) {
+	client := NewClient(&Config{
+		AppID:       testAppID,
+		PrivateKey:  testPrivateKey,
+		PublicKey:   testPublicKey,
+		Key:         testKey,
+		EncryptType: testEncryptType,
+		BaseURL:     testBaseURL,
+	})
+
+	resp, err := client.Query(context.Background(), &QueryRequest{
+		OutBizNo: "order_001",
+	})
+	if err != nil {
+		t.Fatalf("Query failed: %v", err)
+	}
+	fmt.Printf("Query response: %+v\n", resp)
+}
+
+func TestClient_Discard(t *testing.T) {
+	client := NewClient(&Config{
+		AppID:       testAppID,
+		PrivateKey:  testPrivateKey,
+		PublicKey:   testPublicKey,
+		Key:         testKey,
+		EncryptType: testEncryptType,
+		BaseURL:     testBaseURL,
+	})
+
+	resp, err := client.Discard(context.Background(), &DiscardRequest{
+		TradeNo: "7251449503000383488",
+	})
+	if err != nil {
+		t.Fatalf("Discard failed: %v", err)
+	}
+	fmt.Printf("Discard response: %+v\n", resp)
+}
+
+func TestClient_BatchOrder(t *testing.T) {
+	client := NewClient(&Config{
+		AppID:       testAppID,
+		PrivateKey:  testPrivateKey,
+		PublicKey:   testPublicKey,
+		Key:         testKey,
+		EncryptType: testEncryptType,
+		BaseURL:     testBaseURL,
+	})
+
+	resp, err := client.BatchOrder(context.Background(), &BatchOrderRequest{
+		OutBizNo:   "batch_001",
+		ActivityNo: testActivityNo,
+		Number:     10,
+		NotifyURL:  "https://notify.example.com/openapi",
+	})
+	if err != nil {
+		t.Fatalf("BatchOrder failed: %v", err)
+	}
+	fmt.Printf("BatchOrder response: %+v\n", resp)
+}
+
+func TestClient_BatchQuery(t *testing.T) {
+	client := NewClient(&Config{
+		AppID:       testAppID,
+		PrivateKey:  testPrivateKey,
+		PublicKey:   testPublicKey,
+		Key:         testKey,
+		EncryptType: testEncryptType,
+		BaseURL:     testBaseURL,
+	})
+
+	resp, err := client.BatchQuery(context.Background(), &BatchQueryRequest{
+		TradeNo: "7251449503000383499",
+	})
+	if err != nil {
+		t.Fatalf("BatchQuery failed: %v", err)
+	}
+	fmt.Printf("BatchQuery response: %+v\n", resp)
+}
+
+func TestVerifyCallback(t *testing.T) {
+	// 模拟回调参数
+	appID := "123456"
+	timestamp := "2026-06-22 15:30:00"
+	sign := "base64_encoded_signature"
+	data := `{"out_biz_no":"batch_001","trade_no":"7251449503000383499","status":"success","download_url":"https://oss.example.com/openapi_7251449503000383499.zip","zip_password":"123456"}`
+
+	err := VerifyCallback(appID, timestamp, sign, data, testPublicKey, []byte(testKey), testEncryptType)
+	if err != nil {
+		t.Logf("VerifyCallback result: %v (expected if sign is invalid)", err)
+	} else {
+		t.Log("VerifyCallback success")
+	}
+}
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