Choose loam or sandy loam with flat terrain, convenient irrigation, good drainage and high humus and organic matter content. Apply 3000 ~ 4000 kg of decomposed farmyard manure or biological fertilizer 100 kg every 667 meters, and turn over 20 ~ 30 cm. Rake the soil to make the border, the border in the area with less rain is flat, and the border in the area with more rain is high. The height of the boundary is about 20 cm, and the width and length of the boundary depend on the terrain. Isatis indigotica is planted with seeds, which can be sown in spring or summer, and the quality of medicinal materials sown in spring is better. Spring sowing was carried out between Qingming and Grain Rain in early April; The summer sowing is in late May, and the awning is carried out until the summer solstice, not later than June. Soak the seeds with warm water at 30℃ for 3 ~ 4 hours before sowing, or accelerate germination without soaking the seeds. Drilling or broadcasting. Multi-purpose drilling, in the whole border, open a ditch with a row spacing of 20 cm and a depth of 2 ~ 3 cm, and evenly spread the seeds into the ditch with a sowing width of 4 ~ 5 cm, and cover the soil with 2 cm after sowing, which is slightly suppressed. Sowing means sowing seeds evenly all over the bed. The sowing amount per 667m is1.5 ~ 2kg.