The invention discloses a PVD vacuum coating process. The PVD vacuum coating process comprises the following steps that 1, the surface of a base material is treated, specifically, the surface of the base material is wiped and washed, and degreasing and dedusting treatments are conducted; and the cleanness and dryness of the base material are ensured; 2, prime coating and drying of the base material are conducted, specifically, the surface of the base material is coated with coating oil, then drying is conducted, the drying temperature is 60-70 DEG C, and the drying time is 2 hours; 3, coatingis conducted, specifically, the base material in the step 2 is placed in a vacuum coating furnace, a vacuumizing device vacuumizes the vacuum coating furnace, and after the vacuum degree reaches the requirements, the vacuum coating furnace starts coating; 4, cleaning is conducted, specifically, the coated workpiece is put into an ultrasonic cleaning device for cleaning; and 5, drying is conducted,specifically, the cleaned workpiece is dried, and packaging is conducted.