Building waterproof coating wall surface construction device

The utility model discloses a building waterproof paint wall construction device which comprises a main body, a telescopic assembly, a conveying pump and a material collecting box, the bottom of the main body is provided with the telescopic assembly matched with the main body, the bottom of the telescopic assembly is provided with the conveying pump, and the bottom of the conveying pump is fixedly provided with a handle. A conveying pipe extending to the main body and the handle is arranged in the conveying pump, the tail end of the conveying pipe is connected with the coating barrel, and a brushing assembly is arranged at the top of the main body; the brushing assembly comprises a sponge rolling brush and a rolling shaft frame, the sponge rolling brush is arranged at the top of the rolling shaft frame, a connecting pipe connected with the sponge rolling brush is arranged in the rolling shaft frame, a material collecting box is arranged at the bottom of the rolling shaft frame, a connecting assembly matched w