The invention discloses spraying equipment for improving spraying efficiency of an inner wall of furniture. The spraying equipment comprises a workbench, a placement groove is formed in the workbench,a stand column is arranged on one side of the placement groove, a mounting block is connected to the stand column in a sliding mode, the front end of the mounting block is provided with a vertically-arranged feeding pipe, four spraying heads are vertically arranged on the side wall of the bottom end of the feeding pipe, the spraying heads comprise coating spraying pipes, the outlet ends of the coating spraying pipes are connected with nozzles, the nozzles are in a circular truncated cone shape, a plurality of liquid spraying holes are formed in the liquid outlet ends of the nozzles, circulartruncated cone-shaped cavities are formed in the liquid spraying holes, triangular convex teeth are arranged on the inner walls of the liquid outlet ends of the liquid spraying holes, the outer wallsof the liquid outlet ends of the nozzles are sleeved with shielding covers, and the openings of the shielding covers are covered with spraying isolation nets. The efficient spray heads can be used forsimultaneously spraying a plurality of wall surfaces of the inner wall of the furniture, the spraying efficiency is improved, uniform spraying can be carried out, the spraying quality is improved, meanwhile, the surfaces of the spray heads and the surface of the furniture can be well protected, so that the spray heads are prevented from colliding with the furniture to pollute the spray heads.