The invention discloses a manufacturing method for a lock-rivet groove liquid cooling plate and the lock-rivet groove liquid cooling plate. The method comprises the steps that after being subjected todirt removal, a water way plate and a panel are bonded together to form a double-layer plate; according to the preset lock-rivet point, the double-layer plate is moved to the position between an upper lock-rivet head and a lower lock-rivet head of lock-rivet equipment, and the lower end face of the double-layer plate is attached to the upper end face of the lower lock-rivet head; and the lock-rivet equipment controls the upper lock-rivet head to conduct downward riveting till the lower lock-rivet head is expanded and swollen, a lock-rivet groove is formed in the inner side of the upper end ofa riveted part of the double-layer plate and is in an inverted frustum shape. According to the provided manufacturing method for the lock-rivet groove liquid cooling plate, the water way plate and the panel are bonded together to form the double-layer plate firstly, then, the lock-rivet groove is formed through riveting of the lock-rivet equipment, the manufacturing method is simple, and cost islow; and meanwhile, leakage does not need to be worried, and the liquid cooling plate manufacturing cost is effectively reduced.