The invention provides a technological method for electro-coppering of a PCB (printed circuit board). The technological method mainly comprises the following steps: (1) deburring: PCB feeding, PCB grinding, high-pressure washing, oven-drying and then PCB discharging are performed; (2) copper deposition: PCB loading, swelling, first washing, desmear, second washing, pre-neutralization, third washing, neutralization, ultrasonic washing, deoiling, post-deoiling, fourth washing, mild etching, fifth washing, pre-impregnation, activation, acceleration, sixth washing, chemical copper deposition, acid pickling and seventh washing are performed; and (3), copper intensification: PCB loading, deoiling, washing, acid leaching, plating thickening, high-position washing and PCB discharging. According to the technological method provided by the invention, a vibrating device is added to the copper deposition process, so that the circumstance of no copper in holes can be obviously improved; through the special design for a plating tank in the cooper intensification process, not only can the activity of a plating solution be guaranteed, but also the plating uniformity can be facilitated; and meanwhile, through synergistic action between the plating solution and the plating tank, the highest plating uniformity and plating efficiency can be achieved.