Movable raining system

The utility model discloses a movable raining system, which comprises rails, a movable vehicle body and a spraying device, the movable vehicle body is arranged on the two parallel rails in a rolling manner and is driven by a movable motor to reciprocate along the rails, the rails are arranged on the ground through at least two upright posts, and the spraying device is arranged on the upright posts. The spraying device comprises spraying heads, a spraying pipeline, a connecting hose and a spraying pump, a water outlet of the spraying pump is communicated with the spraying pipeline arranged on the movable vehicle body through the connecting hose, and at least two spraying heads are arranged on the spraying pipeline; the spraying pipeline comprises a main water pipe, branch water pipes and spraying pipes; through cooperation of the track, the mobile vehicle body and the spraying device, the mobile vehicle body drives the spraying device to move on the track, so that accurate long-distance position movement is re