The utility model relates to the technical field of auxiliary equipment of plating assisting tanks, in particular to a plating assisting tank heating device which comprises a heating device body, and the heating device body comprises a U-shaped structural body and a heating
pipe arranged in the structural body; the buffer device comprises a first buffer plate and a second buffer plate, the first buffer plate protrudes and is connected to the surface of the structural body, the second buffer plate is arranged on the other surface of the structural body, the second buffer plate abuts against the plating assisting
pool, and the surface, facing the other wall face of the plating assisting
pool, of the first buffer plate is in an arc shape. When a workpiece collides with the heating device, the arc-shaped surface of the first buffer plate deviates and collides with the workpiece, collision energy is reduced, and meanwhile the first buffer plate absorbs part of collision energy. And the second buffer plate prevents the heating device from moving, so that the heating device is protected and stabilized. The heating device has the effect of buffering
impact and damage caused by workpiece collision to the heating device.