Solid solution: The beryllium bronze workpiece is heated to a high temperature (800-815 ° C) and kept at a constant temperature for 2-3 hours, so that the crucible is completely ablated into the copper to form a uniform condition; quenching: the beryllium copper is rapidly cooled in the water, so that the germanium atoms are too late to be dispersed. Constituting a supersaturated condition; aging: applying a vacuum heat treatment furnace to heat the supersaturated workpiece to a lower aging temperature (340 plus or minus 5 ° C), due to the instability of the supersaturation condition, the rated helium atoms are dispersed and precipitated in a short distance. After 2-3 hours of heat preservation, the amount of bismuth and copper precipitated will reach equilibrium, and the mechanical properties at this time are obviously improved.