Efficient unfreezing device

The utility model relates to an efficient unfreezing device which comprises a cryopreservation pipe frame used for placing cryopreservation pipes. An unfreezing cavity used for containing the cryopreservation pipe frame is formed in the unfreezing box; the air blower is arranged in the unfreezing cavity, an air duct is formed in the air blower, and an outlet of the air duct faces the cryopreservation pipe frame; the heat transfer assembly comprises a heating piece and a cooling fin for transferring heat of the heating piece, the cooling fin is formed by arranging a plurality of heat conducting fins at intervals, and the heat conducting fins are vertically arranged at an inlet of the air duct. The cooling fins are of a multi-layer heat-conducting fin structure arranged at intervals, the contact area between the heating piece and air is increased through the heat-conducting fin structure, and the heat-conducting fins can rapidly and evenly heat the air near the air channel inlet. And the heating piece is arrang