An electric vehicle controller housing tapping die is an automatic tapping tool regardless of thickness of electric vehicle controller housings and can normally achieve tapping of battery cases, and meanwhile the operation depth of an irregular male die can be adjusted. The electric vehicle controller housing tapping die comprises an upper die plate and a lower die plate and is characterized in that the upper die plate is fixed on the upper surface of the lower die plate through a polyurethane elastomer, the lower surface of the upper die plate is connected with one upper padding plate, an upper fixing plate is fixed with the upper padding plate, a guiding column is designed on the upper fixing plate, and a female die on the lower die plate is provided with a round hole corresponding to the guiding column. The electric vehicle controller housing tapping die has the advantages that the tapping tool is wide in application range and safe and can be used for tapping of the electric vehicle controller housings different in thickness and ensure personal safety.