Cell filter

The utility model relates to the technical field of cell filtering devices, in particular to a cell filter, which comprises a cell filtering body, the cell filtering body comprises a shell, a solution filtering cavity, a pipette and a filter membrane, the solution filtering cavity is arranged in the shell, the filter membrane is arranged in the solution filtering cavity, and the pipette is inserted on the filter membrane. A first blocking piece is arranged at the end, communicated with the screw injector, of the liquid suction pipe, and two symmetrically-arranged second blocking pieces are arranged at the end, communicated with the needle head, of the liquid suction pipe. The first blocking piece and the second blocking piece of the cell filter are generally closed, when liquid is sucked, the first blocking piece is opened, the liquid is sucked into the injector from the liquid suction pipe under the suction force of the screw injector, and when the liquid is sucked and flows out, the first blocking piece is