The invention discloses a variable frequency motor piece rotor core riveting pressing tooling. The tooling comprises an upper template, a lower template, an upper pressing plate and a lower pressing plate. At least 2 step through holes whose upper portions are large and lower portions are small are arranged downwardly and pass through the upper template and the upper pressing plate. An equal height screw is installed in each step through hole. A lower end of the equal height screw passes through each step through hole and is fixedly connected to a clamping plate. A compression spring A sleeves a whole body of each equal height screw. The clamping plate is provided with a cylindrical punching hole. A punch is arranged in the cylindrical punching hole. A positioning seat is connected to the lower pressing plate in a fastened mode. An upper portion of the positioning seat is provided with a positioning sleeve. A center position of the positioning seat is provided with a step rising hole. A center position of the step rising hole is fixedly provided with a rising column. A rising sleeve is cooperatively arranged with the rising column. A taper hole is arranged in the rising sleeve. A compression spring B is installed between a bottom of the rising sleeve and the lower pressing plate. During a whole production process, operation of the riveting pressure tooling is convenient; time is short and efficiency is high; inner holes are tidy; and good practical usage and popularization values are possessed.