The invention belongs to the technical field of the epoxy resin automatic pressure gel processes (APG), and particularly relates to a waste receiving device and a molding machine using the waste receiving device. The waste receiving device comprises a receiving plate arranged above a lower core pulling cylinder and for allowing telescopic rods of the core pulling cylinder to penetrate through, thereceiving plate comprises a first receiving plate and a second receiving plate fixed in a docking mode, telescopic rod matching grooves are formed in the seam positions of the first and second receiving plates in one-to-one correspondence, and a telescopic perforation for allowing the corresponding telescopic rod of the lower core pulling cylinder to penetrate through and matched with the corresponding telescopic rod in a sliding mode is formed after the docking of each two telescopic rod matching grooves. During the work of the molding machine, a die at the upper portion of the lower core pulling cylinder can produce more overflow materials, the overflow materials can flow downwards along a lower core pulling plate and the telescopic rods of the lower core pulling cylinder, the first andsecond receiving plates make the overflow materials which may flow into the lower core pulling cylinder along the telescopic rods fall into the first and second receiving plates, and the problem of inconvenient cleaning due to the fact that the waste is likely to flow into a lower core pulling cylinder in the prior art is solved better.