Cell freeze dryer

The utility model belongs to the technical field of freeze-drying equipment, and particularly relates to a cell freeze-drying instrument which comprises a box body, a refrigerating system and a vacuum system are arranged in the box body, a rotating shaft is arranged in the box body, a motor used for driving the rotating shaft to rotate is arranged at the bottom of the box body, a plurality of suspension frames are arranged on the rotating shaft, and each suspension frame comprises a sleeve detachably connected to the rotating shaft. A plurality of supporting rods are arranged on the outer side wall of the sleeve, an arc-shaped connecting rod is arranged between every two adjacent supporting rods, gas in the box body can pass through the supporting rods, a net bag used for containing a cryopreservation tube is arranged at the joint of each arc-shaped connecting rod and the corresponding supporting rod, and the problem that vertical circulation of gas is hindered by a tray in an existing freeze drying instrumen