diff --git a/library/think/Model.php b/library/think/Model.php
index 78e6c8a4..870be43e 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -286,12 +286,10 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
             if (false === $this->trigger('before_update', $this)) {
                 return false;
             }
-            // 更新的时候检测字段更改
-            if (!empty($this->change)) {
-                foreach ($data as $key => $val) {
-                    if (!in_array($key, $this->change) && !$this->isPk($key) && !isset($this->relation[$key])) {
-                        unset($data[$key]);
-                    }
+            // 去除没有更新的字段
+            foreach ($data as $key => $val) {
+                if (!in_array($key, $this->change) && !$this->isPk($key) && !isset($this->relation[$key])) {
+                    unset($data[$key]);
                 }
             }
 
diff --git a/library/think/db/Driver.php b/library/think/db/Driver.php
index c2c52885..0f6069fb 100644
--- a/library/think/db/Driver.php
+++ b/library/think/db/Driver.php
@@ -1350,6 +1350,9 @@ abstract class Driver
      */
     protected function parseData($data, $bind)
     {
+        if (empty($data)) {
+            return [];
+        }
         $fields = array_keys($bind);
         foreach ($data as $key => $val) {
             if (!in_array($key, $fields, true)) {
@@ -1761,7 +1764,10 @@ abstract class Driver
         $options = $this->_parseOptions();
         $bind    = $this->getTableInfo($options['table'], 'bind');
 
-        $data   = $this->parseData($data, $bind);
+        $data = $this->parseData($data, $bind);
+        if (empty($data)) {
+            return 0;
+        }
         $fields = array_keys($data);
         $values = array_values($data);
         // 兼容数字传入方式
@@ -1854,7 +1860,9 @@ abstract class Driver
         $bind  = $this->getTableInfo($options['table'], 'bind');
         $table = $this->parseTable($options['table']);
         $data  = $this->parseData($data, $bind);
-
+        if (empty($data)) {
+            return 0;
+        }
         foreach ($data as $key => $val) {
             $set[] = $key . '=' . $val;
         }