The utility model relates to a belt cleaning device, concretely relates to refrigeration cycle water tray pipe belt cleaning device. The utility model discloses a refrigeration cycle water tray pipe,washing tank, scavenge pipe, time liquid pipe, washing liquid import and the washing liquid the putting the thing board, set up on the washing tank lateral wall that set up on the washing tank lateralwall export, vertical the placing on putting the thing board of refrigeration cycle water tray pipe, the washing liquid export is connected through the scavenge pipe and the inlet of refrigeration cycle water tray pipe, and washing liquid import passing through back liquid pipe is connected with the liquid outlet of refrigeration cycle water tray pipe. The utility model discloses a washing tank,scavenge pipe and return the liquid nest of tubes and become circulation cleaning system can be fast thorough wash refrigeration cycle water tray pipe, and the cleaning performance is good, the cleaning efficiency height, and the utilization ratio of washing liquid is abundant.