Faucet water purifier

The invention discloses a faucet water purifier. The purifier comprises a valve body, a filter element, a filter element outer cylinder, a fixed piece, a rotating piece and a rotating shaft. The valve body is composed of a vertical pipe and a transverse pipe, a partition plate is arranged at the crossed position of the transverse pipe and the vertical pipe, the fixed piece is fixedly arranged at the inner side of the right end of the transverse pipe, the rotating piece is rotationally arranged at the inner side of the right end of the transverse pipe, and the partition plate is provided with a first liquid inlet hole, a first liquid outlet hole, a first flow guide hole, a second flow guide hole and a third flow guide hole. A first through hole, a second through hole, a third through hole, a fourth through hole and a fifth through hole are formed in the fixed piece in a penetrating manner. The rotating piece is provided with a first diversion trench and a second diversion trench, and when the two ends of the f