A food purification system comprises a cleaning sink a water pump an electrolyzed water generator an ultrasonic system a water catalyst and a photocatalyst. The electrolyzed water generator the cleaning sink and the water pump are each provided with a water inlet and a water outlet. The electrolyzed water generator the cleaning sink and the water pump are connected through pipes to form a closed circulation loop. The ultrasonic system the water catalyst and the photocatalyst are disposed in the cleaning sink. The water catalyst is titanium dioxide and stainless steel and the photocatalyst is nanometer titanium dioxide the water catalyst and the photocatalyst are uniformly sprayed on a surface of the cleaning sink. A fluorescent light source is provided. The electrolyzed water generator is formed by an electrolytic tank and a nanometer strontium titanate electrode. The ultrasonic system is formed by an oscillating circuit an amplifier and an ultrasonic energy converter. The cleaning sink is made of polyvinyl chloride nanometer plastics and a panel is made of ABS plastics. The system has a good purification effect and is environmental friendly.
