Construction fence with dust falling function

The construction fence with the dust falling function comprises a fence body, the top of the fence body is fixedly connected with a water conveying pipe, the surface of the water conveying pipe is fixedly connected with a fixing block, the top of the fixing block is provided with a matching groove, and the inner wall of the matching groove is movably connected with a spraying head. The fence body, the water conveying pipe, the fixing block, the matching groove, the spraying head, an L-shaped block, a clamping groove, a limiting mechanism, a movable block, a limiting rod, a spring, an adjusting mechanism, an adjusting block, an adjusting rod, a connecting block, a connecting rod, a transmission block, a limiting groove, an adjusting hole, a fixing groove, a sliding block, a sliding groove, a limiting hole and a sealing ring are used in cooperation. The problems that an existing construction fence with the dust falling function can be damaged after being used for a long time, a spraying head needs to be replace