The invention discloses a device used for bending heating pipes. The device comprises a bending mechanism and a clamping mechanism, wherein the bending mechanism comprises a support shaft, two connectors, a support component, a first driving unit, a rack, a connecting rod and a second driving unit; and the clamping mechanism comprises a first clamping plate, a second clamping plate and a third driving unit. In the invention, heating pipes are arranged in a space formed by a first groove and a second groove and simultaneously arranged in a space formed by the support component and the support shaft, the heating pipes are clamped by using the first driving unit and the third driving unit, then, by using the second driving unit, the support shaft is driven to rotate and move in the length direction of the rack, and accordingly, the heating pipes can be bent. The device is high in speed, great in bending effect, high in efficiency as multiple heating pipes can be bent each time, simple in structure and convenient to use.