The utility model discloses a sterilizing equipment of water heater and the water heater that has it, a sterilizing equipment includes for the water heater: the outer tube, be equipped with water inlet and delivery port on the outer tube, the printing opacity inner tube, the printing opacity inner tube is established in the outer tube, the printing opacity inner tube with inject between the outer tube with the water inlet with the water cavity excessively of delivery port intercommunication, in the printing opacity intraductal limited play with cross the sealed chamber that the water cavity is sealed relatively, an ultraviolet sterilization lamp, sterilamp establishes sealed intracavity, the power cord, the power cord stretches into sealed chamber with sterilamp links to each other and avoids cross the water cavity. According to the utility model discloses a sterilizing equipment can disinfect fast, promotes out water quality of water, and the guarantee water is healthy for the water heater.