A household ozone generator, comprising a housing (1), a water storage tank (2), and an ozone generator (4). The water storage tank (2) is located at the bottom end inside the housing (1), the ozone generator (4) is located on the upper surface of the water storage tank (2), the two sides of the upper end of the water storage tank (2) are respectively communicated with a water inlet pipe (16) and a water outlet pipe (17), a slideway (6) is provided in the middle of the upper end of the water storage tank (2), the lower end of the ozone generator (4) is communicated with a gas pipe (5), the gas pipe (5) passes through the slideway (6) to the interior of the water storage tank (2), support sliding blocks (8) are fixed at the two ends of the lower side of the ozone generator (4), limiting blocks (801) are fixed at the two ends of each support sliding block (8), limiting grooves (201) matching the slideway (6) are formed in the two sides of the slideway (6), an electric telescopic rod (7) is provided at one end of the upper side of the water storage tank (2), an output shaft of the electric telescopic rod (7) is fixedly connected to one side of the ozone generator (4), a connecting plate (9) is fixed at the other end of the water storage tank (2), springs (10) are symmetrically fixed between the connecting plate (9) and the ozone generator (4), and a PLC (3) is provided at the upper end of the housing (1). The household ozone generator can broaden the conveying range of ozone and accelerate the sterilization rate of drinking water, and the stability of the ozone generator (4) during movement is high.