Constant-temperature storage device

The utility model provides a constant-temperature storage device, which belongs to the technical field of medical constant-temperature storage equipment and comprises a storage box, a temperature adjusting module and a power module. A containing cavity used for containing a pre-filling liquid storage device is formed in the storage box, and a penetrating hole is formed in the bottom of the containing cavity and used for allowing a pre-filling pipeline to penetrate through. The temperature regulation and control module is arranged on the storage box and used for maintaining the temperature in the containing cavity to reach the target temperature; the power supply module is arranged on the storage box and is electrically connected with the temperature regulation and control module; when the ECMO loop is used, the temperature of the pre-filling liquid in the containing cavity is kept at the target temperature through the temperature regulation and control module, the pre-filling pipeline on the pre-filling liqui