The invention discloses a method for interplanting radix isatidis in a ginkgo forest. The method comprises the steps that sowing is conducted after selection and preparation of land and seed pretreatment are conducted, radix isatidis seeds and herba leonuri seeds are sowed in furrows at intervals by adopting a drilling method, field management is conducted, and when seedlings of the radix isatidis grow to 5-10 cm high, fertilization is stopped; stem-cut treatment is conducted on all the portions, above the portions 1-2 cm away from the ground, of plants of herba leonuri; protection management is conducted on a field, the aboveground parts are cut till the radix isatidis ripens, roots is dug out, basal parts of stems and soil are removed cleanly, and drying or baking is conducted. The radix isatidis is planted in the ginkgo forest, idle plots in the forest are fully utilized, shortages are utilized to enhance the advantages, and the economic benefit is created. According to the method for interplanting the radix isatidis in the ginkgo forest, the radix isatidis is interplanted in the ginkgo forest, the nutrient conversion rate can be increased, the soil loosening capacity is improved, rootstock of the radix isatidis is made to be expanded rapidly, and the active substance content is greatly improved; due to the fact that the herba leonuri is planted at intervals, stem-cut is conducted on the herba leonuri, the rootstock of the radix isatidis can be strong and large, and the growth vigor is rapid.