Soxhlet extraction device is based on soxhlet extraction principle, which integrates the functions of leaching, extraction, heating, condensation and solvent recovery. The closed electric heating sleeve is used for heating, automatic temperature control, uniform heating and safe operation. Three or six samples can be tested at the same time. The best temperature can be selected according to the boiling point of the reagent to realize rapid analysis. The reagent can be recycled and the test cost can be reduced. Leaching, extraction and solvent recovery are completed in one step. Therefore, the device has the advantages of reasonable design, stable performance, good reproducibility, high accuracy, convenient operation, time-saving and labor-saving. It can quickly separate a substance from solid or semi-solid mixture, and can determine soluble organic compounds in food, feed, medicine, soil, sludge, polymer, fiber products, petrochemical products, detergents, rubber, plastics and other substances.