diff --git a/src/main/java/com/iflytop/sgs/app/cmd/control/LiquidPreFillStartCommand.java b/src/main/java/com/iflytop/sgs/app/cmd/control/LiquidPreFillStartCommand.java
index a210817..25862c3 100644
--- a/src/main/java/com/iflytop/sgs/app/cmd/control/LiquidPreFillStartCommand.java
+++ b/src/main/java/com/iflytop/sgs/app/cmd/control/LiquidPreFillStartCommand.java
@@ -46,14 +46,13 @@ public class LiquidPreFillStartCommand extends BaseCommandHandler {
         ValveStateCode valveStateCode = ValveStateCode.valueOf(solutions.getCode());//获取对应的电磁阀通道
         Point3D liquidAreaTrayPoint = devicePositionService.getPosition(DevicePositionCode.liquidAreaTrayPoint).getPoint3D(); //获取加液区上方点位
         double position = devicePositionService.getPosition(DevicePositionCode.solutionPreFillDistance).getDistance();//溶液首次预充距离
-        double motorDownInTubeExtPositon = devicePositionService.getPosition(DevicePositionCode.solutionModuleMotorDownInTubeExtPositon).getPositon();//加液臂抽液位
         return runAsync(() -> {
             deviceStateService.getDeviceState().getSolutionModule().setIdle(true);//设置占用
             deviceStateService.getDeviceState().getSolutionModule().setPumping(true);//设置正在加液
             solutionModuleService.liquidValveSwitch(cmdDTO.getCommandId(), cmdDTO.getCommand(), valveStateCode);//电磁阀对应的酸液通道打开
             solutionModuleService.solutionMotorMoveZero(cmdDTO.getCommandId(), cmdDTO.getCommand());//加液机械臂上升
             transferModuleService.transferMove(cmdDTO.getCommandId(), cmdDTO.getCommand(), liquidAreaTrayPoint);//移动至加液位置
-            solutionModuleService.solutionMotorMove(cmdDTO.getCommandId(), cmdDTO.getCommand(), motorDownInTubeExtPositon);//加液机械臂下降至加液位
+            solutionModuleService.solutionMotorMoveZero(cmdDTO.getCommandId(), cmdDTO.getCommand());//加液机械臂下降至0点
             solutionModuleService.liquidPumpMove(cmdDTO.getCommandId(), cmdDTO.getCommand(), position);//预充开始
             deviceStateService.getDeviceState().getSolutionModule().setIdle(false);//设置占用
             deviceStateService.getDeviceState().getSolutionModule().setPumping(false);//设置正在加液