diff --git a/api.go b/api.go
index a79c802..25e4d3a 100644
--- a/api.go
+++ b/api.go
@@ -39,14 +39,15 @@ func (l *apix) GetSign(ctx context.Context, signKey string, params map[string]an
 	if signKey == "" {
 		return "", ErrorSignKeyIsEmpty
 	}
-	if len(params) == 0 {
-		return "", ErrorSignParamIsEmpty
-	}
 
 	for _, val := range l.ignoreKeys {
 		delete(params, val)
 	}
 
+	if len(params) == 0 {
+		return "", ErrorSignParamIsEmpty
+	}
+
 	// 排序
 	keys := make([]string, len(params))
 	i := 0
diff --git a/platform.go b/platform.go
index 6becc7b..b6c8ee0 100644
--- a/platform.go
+++ b/platform.go
@@ -13,14 +13,14 @@ import (
 )
 
 type platform struct {
-	ingoreKeys []string
+	ignoreKeys []string
 	logger     loggerx.LoggerInterface
 }
 
 func NewPlatform(opts ...Option) *platform {
 	options := newOptions(opts...)
 	return &platform{
-		ingoreKeys: options.ignoreKeys,
+		ignoreKeys: options.ignoreKeys,
 		logger:     options.logger,
 	}
 }
@@ -30,12 +30,13 @@ func (l *platform) GetSign(ctx context.Context, signKey string, params map[strin
 	if signKey == "" {
 		return "", ErrorSignKeyIsEmpty
 	}
-	if len(params) == 0 {
-		return "", ErrorSignParamIsEmpty
+
+	for _, val := range l.ignoreKeys {
+		delete(params, val)
 	}
 
-	for _, val := range l.ingoreKeys {
-		delete(params, val)
+	if len(params) == 0 {
+		return "", ErrorSignParamIsEmpty
 	}
 
 	// 排序