The invention discloses stirring equipment for a coating. A stirring main shaft drives horizontal plates and stirring outer-extension parts to stir various raw materials in a stirring barrel for crushing, dispersing and mixing various raw materials, and each stirring outer-extension part includes vertical pipes and transverse pipes; and plate drug outlet holes and part drug outlet holes can supplement mixed raw materials or dispersed drugs on line; heat supply devices can provide heat and horizontal stirring; and a temperature detecting sensor can monitor the temperature environment in the mixing barrel. The equipment provided by the invention not only has a stronger stirring function, but also can be used for heat stirring, the uniformity of the mixture is better, and the stability is higher; and the equipment can supplement the drugs on line, has stronger controllability, and is beneficial for use in subsequent building construction.