The invention relates to the technical field of electronic equipment, in particular to a multi-spot welding oil pocket positioning system. The multi-spot welding oil pocket positioning system comprises a rack; an oil pocket positioning mechanism which corresponds to an oil heater radiating fin assembly is arranged on the rack; the oil pocket positioning mechanism comprises upper oil pocket positioning bocks which are separately positioned at the upper side and the lower side of the oil heater radiating in assembly and lower oil pocket positioning blocks which are matched with the upper oil pocket positioning blocks; the upper parts of the upper oil pocket positioning blocks are connected with upper linear air cylinders; the lower parts of the lower oil pocket positioning blocks are connected with lower linear air cylinders; and the upper linear air cylinders and the lower linear air cylinders drive the upper oil pocket positioning blocks and the lower oil pocket positioning blocks for simultaneously clamping the positioned oil heater radiating fin assembly for precise welding. According to the multi-spot welding oil pocket positioning system, the upper linear air cylinders and the lower linear air cylinders are arranged, so that precise positioning for an upper oil heater radiating fin and a lower oil heater radiating fin during welding is realized, and a rejection rate during multi-spot welding of the upper oil heater radiating fin and the lower oil heater radiating fin is reduced.