Cell storage incubator

The utility model relates to the technical field of heat preservation, in particular to a cell storage constant-temperature box which comprises a constant-temperature box body, a test tube tray, a clamping piece and a cleaning brush, first sliding grooves are symmetrically and evenly formed in the inner wall of the constant-temperature box body, and first sliding blocks are arranged in the first sliding grooves; test tube trays are clamped to the outer surfaces of the two first sliding blocks, circular grooves are evenly formed in the upper surfaces of the test tube trays, two second sliding grooves are formed in the inner walls of the circular grooves in a central symmetry mode, telescopic rods are fixedly connected to the inner walls of the two second sliding grooves, and the outer surfaces of the telescopic rods are sleeved with springs. Clamping pieces are fixedly connected to the side faces, away from the constant-temperature box body, of the two telescopic rods. The test tube clamping device and the obs