diff --git a/src/main/java/com/iflytop/sgs/hardware/config/StepMotorConfig.java b/src/main/java/com/iflytop/sgs/hardware/config/StepMotorConfig.java
index 63f53d1..9232ada 100644
--- a/src/main/java/com/iflytop/sgs/hardware/config/StepMotorConfig.java
+++ b/src/main/java/com/iflytop/sgs/hardware/config/StepMotorConfig.java
@@ -34,7 +34,7 @@ public class StepMotorConfig {
     static final double DEFAULT_MAX_LIMIT = 0.0; // mm
     final static Map<StepMotorMId, Double> stepMotorMaxLimitMap = Map.ofEntries(
             Map.entry(StepMotorMId.DoorM, 200.0),
-            Map.entry(StepMotorMId.LiquidM, 100.0)
+            Map.entry(StepMotorMId.LiquidM, 150.0)
     );
 
     // 是否安装编码器