3D printer capable of regulating temperature of working bin

The invention discloses a 3D printer capable of regulating the temperature of a working bin. The 3D printer comprises a mainframe box, wherein the working bin is arranged in the mainframe box and is provided with a bin cover, a 3D printing device is arranged in the working bin, a flatly-arranged bearing processing platform is arranged at the bottom of the working bin, a heating bin is arranged under the bearing processing platform, an electric heating pipe and a flatly-arranged heat conducting coil are arranged in the heating bin, the heat conducting coil is connected with the electric heating pipe and is nestled to the bottom surface of the bearing processing platform, the heating bin and the working bin are communicated through a breather pipe, an exhaust fan is further arranged at the top of the working bin, a master control bin is arranged under the heating bin, and a master control device for controlling work of the 3D printing device is arranged in the master control bin. The 3D printer can regulate the temperature of the working bin.