diff --git a/src/main/java/com/muyu/vehicle/VehicleInstance.java b/src/main/java/com/muyu/vehicle/VehicleInstance.java
index 03224c8..9c7dead 100644
--- a/src/main/java/com/muyu/vehicle/VehicleInstance.java
+++ b/src/main/java/com/muyu/vehicle/VehicleInstance.java
@@ -299,29 +299,31 @@ public class VehicleInstance {
         }
         List<MessageTemplateValue> messageTemplateValueList
                 = this.messageTemplate.getMessageTemplateValueList();
-        for (MessageTemplateValue messageTemplateValue : messageTemplateValueList) {
-            String valueType = messageTemplateValue.getValueType();
-            MessageTemplateValueType messageTemplateValueType
-                    = MessageTemplateValueType.valueOf(valueType);
-            switch (messageTemplateValueType){
-                // 固定值
-                case FIXED -> {
-                    String fixedValue = messageTemplateValue.getFixedValue();
-                    String[] split = fixedValue.split(",");
-                    vehicleData.putData(messageTemplateValue.getCode(), split[0]);
-                }
-                // 区间值
-                case INTERVAL -> {
-                    vehicleData.putData(
-                            messageTemplateValue.getCode(),
-                            vehicleData.getValue(
-                                    vehicleData.genValue(
-                                            messageTemplateValue.getMinValue(),
-                                            messageTemplateValue.getMaxValue()
-                                    ),
-                                    messageTemplateValue.getLength()
-                            )
-                    );
+        if (messageTemplateValueList != null){
+            for (MessageTemplateValue messageTemplateValue : messageTemplateValueList) {
+                String valueType = messageTemplateValue.getValueType();
+                MessageTemplateValueType messageTemplateValueType
+                        = MessageTemplateValueType.valueOf(valueType);
+                switch (messageTemplateValueType){
+                    // 固定值
+                    case FIXED -> {
+                        String fixedValue = messageTemplateValue.getFixedValue();
+                        String[] split = fixedValue.split(",");
+                        vehicleData.putData(messageTemplateValue.getCode(), split[0]);
+                    }
+                    // 区间值
+                    case INTERVAL -> {
+                        vehicleData.putData(
+                                messageTemplateValue.getCode(),
+                                vehicleData.getValue(
+                                        vehicleData.genValue(
+                                                messageTemplateValue.getMinValue(),
+                                                messageTemplateValue.getMaxValue()
+                                        ),
+                                        messageTemplateValue.getLength()
+                                )
+                        );
+                    }
                 }
             }
         }