The utility model relates to a retrieve the used equipment field of metal, concretely relates to your metal alloy waste material dissolving device by the electrolysis of electrolysis of solutions method. Your metal alloy waste material dissolving device nets negative pole (4), weighing transducer (5), tail gas fan (6), ultrasonic wave level gauge (7), liquid pump (8), electromagnetism flowing backvalve (9), DC power supply (10), direct current contactor (11), dissolves switch (12), controller (13) including electrolytic tank (1), osmotic membrane (2), titanium anode (3), titanium. The utilitymodel discloses simple structure, during operation totally -enclosed, easy operation, dissolving efficiency height, energy -concerving and environment -protective.