The invention relates to a steel door frame door hinge hole numerical control positioning electric control device. The device is composed of a Weinview man-machine touch screen, a PLC (Programmable Logic Controller), a right hinge positioning solenoid valve, a right hinge positioning solenoid valve, a servo motor driver A, a servo motor A, a servo motor driver B, a servo motor B, a heat dissipation fan, a power source indicator lamp, a power source switch, a fuse, a short-circuiting device and a power source cord. With the device of the present invention adopted, the numerical value of a doorpanel unloading height is needed to be inputted into a program in the control panel of the PLC, and the positioning pins of a left positioning mechanism and a right positioning mechanism controlled bythe device of the present invention will automatically move to corresponding positions; an operating button is pressed, and operation can be completed; and therefore, the stamping and cutting efficiency of a plurality of metal plate components of the same size can be improved, operators can be reduced, errors in an operation process can be reduced, the stamping and cutting accuracy of products can be improved, and dimensional accuracy can be improved. With the device of the present invention adopted, operation can be performed with no professionals required, and only one person is just required to complete the stamping and cutting of long metal plate components.