Embryo freezer convenient for taking test tubes

The utility model relates to the technical field of freezing devices, and discloses an embryo freezing box convenient for taking test tubes, which comprises a freezing box body and a sealing cover rotationally connected to the top of the freezing box body, and one side of the freezing box body is rotationally connected with a first knob; the other end of the first rotary knob extends into the freezing box body and is fixedly connected with a rotating shaft, the other end of the rotating shaft is fixedly connected with a worm, and a fixing cylinder is further fixedly connected into the freezing box body. According to the embryo freezing box, the first knob, the screw rod, the jacking block and the limiting cylinder are arranged, so that the effect of preventing the internal environment of the freezing box body from being polluted when a test tube is taken is achieved, the next step of work can be smoothly carried out, and the problem that when the test tube is taken out and put in an existing embryo freezing b