Portable filter element dismounting and mounting structure and water purifier

The utility model discloses a portable filter element dismounting and mounting structure and a water purifier. The portable filter element dismounting and mounting structure comprises a cylinder body, wherein the cylinder body is provided with an accommodating space capable of accommodating a filter element; the lifting handle is rotationally connected to the filter element and is provided with a top block; the first sliding block is in sliding connection with the cylinder body; a fixed pulley assembly; the pushing connecting rod assembly comprises a second sliding block, a sliding block limiting piece, a third sliding block, a first spring and a connecting rod; the fixing buckle is connected with one end, far away from the third sliding block, of the connecting rod; the filter element is provided with a sunken part matched with the fixing buckle; and the ejection spring is arranged at the bottom of the accommodating space. When the filter element needs to be taken out, the lifting handle is rotated, the ejec