The invention belongs to the technical field of water purification treatment equipment, and particularly relates to a water purification apparatus, which comprises a shell and a filtration core arranged inside the shell, wherein the filtration core comprises a filtration core body, both opposite ends of the filtration core body are respectively provided with an inlet and an outlet, at least two filtration core nets are arranged between the inlet and the outlet at intervals along the axis of the filtration core body, the interior of the filtration core body is divided into a plurality of independent chambers by the filtration core nets, and the chamber between the two adjacent filtration core nets is filled with a filtration layer comprising KDF and/or calcium sulfite. According to the present invention, the water purification apparatus has advantages of simple structure and good filtering and purifying treatment effect, can be used for a plurality of devices requiring water purification treatment, can effectively remove residual chlorine, heavy metals and inhibit microbial reproduction, and can further achieve the effect of hygienic and healthy laundry.