The utility model discloses a real device of instructing of secondary intelligence variable frequency water supply teaching, including water supply system and control system, water supply system include the storage water tank, the water inlet and the storage water tank delivery port of running water pressure surge simulation pump are linked together through the pipeline, the delivery port of running water pressure surge simulation pump is linked together with water supply water pump A and water supply water pump B's water inlet respectively through the pipeline to installation water inlet pressure sensor on the delivery port of running water pressure surge simulation pump. The utility model discloses can automatic simulate the undulant condition of running water water pressure and the undulant condition of user's water consumption, the student of being convenient for adjusts to the water supply system PID parameter and carries out real standard, improves the parameter and sets up technical ability. And simultaneously, the utility model discloses can pass through each control module's various combination, realize a pump frequency conversion, the frequency conversion of many pumps, converter independent control etc. Are commonly real standard of secondary intelligence variable frequency water supply system at present, can greatly improve teaching effects and student's actual operational capability.