The invention discloses a teaching aid device for an artificial abortion operation, which comprises a reset mechanical device, a three-dimensional displacement sensor group, a signal processing module, a signal transmission module and a display device. The teaching aid device is characterized in that: the reset mechanical device is driven by a uterine curettage surgical appliance to move and cut uterine in a simulated uterine cavity; the three-dimensional displacement sensor group is a variable potentiometer group which is respectively positioned on an X axle, an Y axle and a Z axle in the simulated uterine cavity, the space three-dimensional positions of the surgical appliance moving and cutting uterine in the simulated uterine cavity are reflected by the change of the potentiometer resistance values in each direction; the signal processing module is used for processing the space three-dimensional position of the surgical appliance acquired by the three-dimensional displacement sensor group; the signal transmission module transmits the information processed by the signal processing module to the display device; and the display device displays the movement tracks of the surgical appliance and the size of the uterine curettage force on a software interface of the display device according to the received space three-dimensional position of the surgical appliance. The teaching aid device operation provided in the invention can be used to ensure that students grasp the operation techniques of the artificial abortion operation by simulating the artificial abortion operation and can be used as a teaching platform for the artificial abortion operation; and the teachers can train and check the artificial abortion operation of students via the platform.