Purifier and purification module installing structure thereof

The utility model provides a purifier and a purification module installing structure thereof. The purification module installing structure comprises a main casing, a rear casing, an upper installing seat and a lower installing seat, wherein the rear casing is buckled with the main casing to form a purification module installing space; the upper installing seat is located on the upper portion of the purification module installing space and provided with a purification module upper installing surface towards the lower end of the purification module installing space, and a plurality of purification module upper installing insertion grooves are formed on the purification module upper installing surface; the lower installing seat is located on the lower portion of the purification module installing space and provided with a purification module lower installing surface opposite to the purification module upper installing surface, and a plurality of purification module lower installing insertion grooves paired with the purification module upper installing insertion grooves are formed on the purification module lower installing surface; and the upper installing seat and the lower installing seat are detachably connected with the main casing or the rear casing. The upper installing seat and the lower installing seat are detachably connected with the main casing or the rear casing, the purification module installing structure is convenient to dismantle and install, a die structure is simplified, and manufacture of an installing seat die is facilitated.