Fuente: WIPO "industrial hemp" The invention provides a pretreatment drying method for simultaneously extracting industrial hemp aromatic water and increasing the CBD content of an industrial hemp raw material, and belongs to the technical field of industrial hemp processing. The method mainly comprises the following steps: (1) taking industrial hemp flowers and/or leaves, performing vacuum microwave extraction and drying, and condensing and collecting aromatic water; (2) carrying out wet heat decarboxylation by microwaves to improve the CBD content; and (3) conducting vacuum microwave drying. According to the method, in the process of drying the industrial hemp flowers and/or leaves, the aromatic water is comprehensively utilized and extracted under the low-temperature and low-oxygen conditions and is added into industrial hemp downstream products, and the original fragrance and flavor of the industrial hemp are reserved; and meanwhile, drying of the industrial hemp is completed, CBDA decarboxylation is achieved, and the dried industrial flower and/or leaf raw material with the CBD content increased is obtained.