The invention relates to a manufacture method of a memory metal sheet of a circuit breaker for a vehicle, belonging to the manufacture method of the metal sheet. The memory metal sheet with more stable motion can be obtained. The manufacture method comprises the steps of: 1, preheating, and heating to 20-40 DEG C; 2, punching; 3, blanking, and punching a strip metal alloy into a rectangular metal sheet with length of 16mm, width of 9.5mm and corner radius of 4.75mm; 4, thermally treating, carrying out thermal treatment in a vacuum thermal treatment furnace at a temperature of 20-40 DEG C; 5, welding a connecting sheet; 6, welding a moving contact; 7, pressing for three times: pre-profiling pressing, secondary-profiling pressing and sizing pressing, wherein the pressure of a cylinder in each pressing is 10MPa, and the pressing time is 2s; and 8, cutting to form the memory metal sheets of the circuit breaker for the vehicle, which are symmetrically along the center line. The memory metal sheet of the circuit breaker for the vehicle, which has good stability, can be obtained by adopting the manufacture method.