Device for preventing and treating freezing injury of navel oranges

The utility model provides a device for preventing and treating freezing injury of navel oranges, which relates to the technical field of freezing prevention of navel oranges and comprises a framework, a connecting plate is arranged in the middle of the framework, a penetrating opening is formed in the connecting plate in a penetrating manner, an inserting block is arranged on the lower portion of the framework, an inserting opening is formed in the inserting block, and a spiral hole is formed in the side face of the inserting block. The interior of the spiral hole is in threaded connection with a fastening bolt, and a top block is fixedly installed on the side face of the inserting block. The wind-proof and light-transmitting plastic film is covered on the framework, the distance between the lowest position covered by the plastic film and the ground is about one fourth of the height of the upper portion of the whole navel orange tree, the greenhouse is ventilated and prevents the temperature in the greenhous