Metal product heat treatment device facilitating feeding and discharging

The metal product heat treatment device comprises a working table, supporting columns are fixedly connected to the corners of the periphery of the bottom end face of the working table, a notch is formed in the front of the upper end face of the working table, a conveying belt is arranged in the notch, the rear side of the upper end face of the working table is connected with a supporting plate, and the supporting plate is connected with the bottom end face of the working table. A connecting plate is connected to the position, located in front of the conveying belt, of the upper end face of the workbench, and a first electric push rod is installed on the front side face of the connecting plate. And then the metal product is subjected to surface heat treatment through an air cylinder, a heating assembly and a heat treatment plate, and after the product subjected to heat treatment is cooled for a certain time, the product subjected to heat treatment is placed on the conveying belt again through cooperation of a