Abstract: Terminal pin device are described herein. The Terminal pin device of the invention comprises a cam box, a cutting mechanism, a material clamping mechanism, a pin inserting mechanism and a cam driving mechanism. The cutting mechanism, the material clamping mechanism, the pin inserting mechanism and the cam driving mechanism are connected with the cam box, and the cam driving mechanism drives the cutting mechanism, the material clamping mechanism and the pin inserting mechanism to operate, so as to realize the integrated terminal cutting, the terminal material clamping and the terminal rotation and terminal pin inserting actions.