Water purification system and self-cleaning method of water purification system

The invention discloses a water purification system and a self-cleaning method of the water purification system. The water purification system comprises an electric purification module and a water purification module, wherein the electric purification module is suitable for carrying out purification treatment on entering water; the electrolysis module is arranged at the front end of the electric purification module, water entering the electric purification module preferentially passes through the electrolysis module, the water entering the electrolysis module is electrolyzed to generate strong oxidizing ions with strong oxidizing property, the generated strong oxidizing ions enter the electric purification module, and the strong oxidizing ions enter the electric purification module. Therefore, the electric purification module is cleaned. According to the water purification system disclosed by the invention, the electrolysis module is arranged at the front end of the electric purification module, and strong ox