A heat pump dryer is a heat boosting device. The high-temperature heat pump dryer unit uses the reverse Carnot principle to absorb heat from the surrounding environment and transfer it to the heated object (objects with higher temperatures). It is mainly used in the drying and dehydration process of food, medicinal materials, wood, agricultural and sideline products, industrial products, etc. The high temperature heat pump drying unit is applicable to the drying of hotel bedding, seafood, vegetable dehydration, AD black tremella, melon seeds, peanuts, fruits and vegetables, meat products, casings, tobacco leaves, leather, mushrooms, medlar, dried fruit, mosquito repellent incense, tribute incense, cloth, clothing, grain, dried noodles, Rolls of dried bean milk creams, fertilizer, medicine, Chinese medicinal materials, paper, wood, seeds, sludge, gypsum, hardware products, metallurgical products, mining by-products, chemical products, FGD gypsum, clay, grass, tobacco, powdered coal, slime, lignite, etc.