Sample application instrument for stem cell culture

The utility model discloses a spotting instrument for stem cell culture, which comprises a box body and a sampling needle for sampling, a working platform is arranged in the box body, and a driving mechanism for driving the sampling needle to move is arranged on the working platform. The test tube rack supporting mechanism is used for supporting a sample tube; the sampling needle mounting mechanism is used for fixing a sampling needle; the test tube rack supporting mechanism comprises a cover plate for covering the upper part of the test tube rack, the cover plate sequentially covers the test tube rack, and sample tubes are sequentially placed in the fixing grooves from left to right without being disordered in sequence; the sampling needle mounting mechanism comprises a lifting plate and valves, the sampling needle is mounted on the lifting plate, the valves comprise a cleaning valve, a suction valve and a slow-release liquid suction valve, and the cleaning valve, the suction valve and the slow-release liqui