The invention relates to an auxiliary process method for automatically stacking iron cores. The method comprises the following steps of guiding an operator to lay an upper / lower clamping piece, a pulling plate, an insulating piece and a final-stage piece by using a laser displacement sensor, an industrial camera and an intelligent control system, and retesting after laying; using the laser displacement sensor, a laser profile measuring instrument and the intelligent control system for detecting the seam of the silicon steel sheets in real time, and if the seam distance exceeds the tolerance range or the two silicon steel sheets are overlapped, alarming and prompting; using the intelligent control system, a positioning pin on a silicon steel sheet correcting device and the positioning holes in the silicon steels sheets to punch and correct the silicon steel sheets; carrying out reference calibration on the key factors and time nodes through a calibration plate, an industrial camera, a calibration point, a temperature and humidity measuring instrument and the intelligent control system. According to the invention, auxiliary accessories for iron core stacking are more quickly and accurately laid, the condition that the seam size meets the process requirement is ensured, and the automatic correction of the positions of the silicon steel sheets in the iron core stacking process is realized.