The invention discloses an astragalus planting method. The steps comprise: preparing field; treating seeds; sowing; performing field management, and controlling pests. In each step, a scientific treatment method is used. A soil conditioner in the step 1 can improve soil physical and chemical properties, reduce pest and disease damage in growth, and improve stress resistance. In step, on the premise of ensuring yield and quality of the astragalus, hard seed property of astragalus seeds is overcome through treatment before sowing, so as to improve rooting and developing efficiency of the astragalus seeds. In step 3 and step 4, fertilizer makes survival seedling rate of the astragalus high, and large amount of organic fertilizer generated in a yield increasing fertilizer can satisfy rapid growth requirements of the astragalus, so growth speed of the astragalus is fast, flowers are flourishing and fruits are rich, seeds are full, and leaf surface drug content is high. The method increases yield and solves a problem of repeated fertilization, and effectively controls incidence of astragalus root rot disease, improves yield and quality, and generates effective economical value.