The invention relates to an automatic edge grinding machine for tempered glass after shaping and cutting. The automatic edge grinding machine for the tempered glass after shaping and cutting comprisesa base, a supporting seat, a supporting mechanism, locking mechanisms, a driving adjustment mechanism, driving sliding blocks, driving motors, grinding mechanisms and grinding adjustment mechanisms.The supporting seat is arranged on the upper end surface of the middle of the base, the supporting mechanism is installed on the upper end surface of the supporting seat, the locking mechanisms are installed at the front end and the rear end of the supporting mechanism, the driving adjustment mechanism is located under the locking mechanisms, the driving sliding blocks are installed at the front end and the rear end of the driving adjustment mechanism, the driving motors are arranged on the upper end surfaces of the driving sliding blocks, output shafts of the driving motors are connected withthe lower parts of the outer ends of the locking mechanisms, the grinding mechanisms are arranged on the left side and the right side of the supporting seat, and the grinding adjustment mechanisms are arranged at the lower ends of the grinding mechanisms. The problems that when round glass is subjected to edge grinding, only one piece can be ground at a time, and the residue on the glass needs tobe cleaned twice after edge grinding are solved; when round glass of different specifications is subjected to edge grinding, a fixture is required to be replaced.