The invention discloses a quick pushing and clamping device for a die casting machine. The device comprises a pushing oil cylinder, a quick clamping plate and a quick clamping rod, one end of the quick clamping plate is connected with the pushing oil cylinder, the other end of the quick clamping plate is connected with the quick clamping rod, and the pushing oil cylinder is used for pushing the quick clamping rod to move forward and backward; the inclined sliding surface of the clamping plate tightens or loosens the clamping rod; the quick clamping rod is slidingly matched with the inclined surface of the quick clamping plate to achieve clamping. The quick pushing and clamping device for the die casting machine has the advantages of high working efficiency, high processing and chamfering precision, wide application range and the like, the technology is easy, the weight of a whole die clamp is reduced, energy consumption is lowered, the product quality is improved, and the problem of clamping the die by the die casting machine in the prior art is solved.