Control system of multipurpose household water purifier

The utility model discloses a control system of a multipurpose household water purifier. The water purifier comprises a shell assembly, an ultrafiltration device, an activated carbon canister, an ultraviolet sterilization device and a touch screen control and display device, wherein a tap water inlet (10), a primary purified water outlet (20), a secondary purified water outlet (30), a direct drinking water outlet (40) and a solenoid valve connected with the tap water inlet, the primary purified water outlet, the secondary purified water outlet and the direct drinking water outlet respectively are formed on the shell assembly; an inlet of the ultrafiltration device is connected with the tap water inlet (10), an outfall is connected with the primary purified water outlet (20), and an outlet is connected with the activated carbon canister; outlets at the two ends of the activated carbon canister are respectively connected with the secondary purified water outlet (30) and an inlet of the ultraviolet sterilization