The invention provides a method for automatically creating a via hole on a copper sheet of a PCB (Printed Circuit Board), which is characterized in that the PCB can automatically search and acquire position information corresponding to a related instruction when receiving external instruction information under a current window, and create and place the via hole according to requirements in the instruction. According to the method, when an external trigger is received, via holes can be automatically created in a ground network copper sheet according to set intervals and arrays, careless omission caused by manually placing the via holes can be avoided, the working efficiency is improved, the conductive area can be increased, the current pressure of a bottleneck part can be relieved, the impedance of a circuit can be reduced, and the integrity of signals can be enhanced.