Ultralow-temperature refrigerator for sparassis crispa

The ultra-low temperature refrigerator comprises a refrigerator body and a plurality of placing plates, the inner wall of the refrigerator body makes contact with the outer sides of the placing plates, and sliding grooves are formed in the left side and the right side of an inner cavity of the refrigerator body. According to the sparassis crispa placing device, the placing plate, the sliding groove, the sliding shell, the positioning device, the push plate, the soft cushion, the L-shaped block, the L-shaped groove and the butt joint groove are used in cooperation, the placing plate can drive the L-shaped block on the rear side to move in the L-shaped groove at the same time, and when the soft cushion at the bottom of the placing plate slightly touches the surface of sparassis crispa, the push plate is loosened; the problems that a partition plate on an existing ultra-low-temperature refrigerator does not have a rapid adjusting function, the partition plate is not provided with a soft pad, the surface of spara