Fuente: WIPO "industrial hemp" The invention discloses a pharmaceutical composition for treating diabetes by combination of an industrial hemp flower and leaf extract and an erigeron breviscapus extract. The pharmaceutical composition is a preparation prepared from an effective dose of industrial hemp flower and leaf extract and the erigeron breviscapus extract and pharmaceutically acceptable auxiliary materials of the industrial hemp flower and leaf extract and the erigeron breviscapus extract. The combination of the industrial hemp flower and leaf extract and the erigeron breviscapus extract can be used for treating or preventing diabetes, the two components have a good synergistic effect, and the dosage of a single component is greatly reduced; and the pharmaceutical composition is wide in safe dosage range and goodin curative effect, and has a good development prospect, and by implementation of a medicinal technology, a new development direction for the medicinal application of industrial hemp is provided. Themethod has good social benefits and economic benefits.