Household water purifier capable of conveniently and quickly replacing filter element

The utility model relates to the technical field of water purifiers, and discloses a household water purifier convenient and quick to replace a filter element, which comprises a shell, a plurality of support plates are arranged in the shell, rubber pads are arranged at the tops of the plurality of support plates, a plurality of first springs are arranged at the bottoms of the plurality of support plates, and a plurality of limiting plates are arranged at the top of the shell. Each two limiting plates form a group, a plurality of glands are arranged at the top of the shell and are positioned between the two limiting plates in one group, two sliding blocks are arranged on the outer sides of the glands, and the sliding blocks are mounted in the limiting plates in a sliding manner, during use, the filter element is mounted in the shell, and then the glands are buckled at the tops of the limiting plates; the two sliding blocks on the outer side of the pressing cover are slidably mounted on the inner wall of the li