The invention provides a method for cultivating organic paris polyphylla in a bamboo forest. The method comprises steps as follows: step one, land selection: extensive wild bamboo forest land is taken as a cultivation area; step two, weed clearing; step three, sowing or transplanting: if seeds are adopted, the seeds can be sown after being harvested, the seeds are sown in holes at the interval of 6*12 cm in the bamboo forest, the hole depth is 5-7 cm, two seeds are sown in each hole, and the soil covering layer is 2-3 cm; if seedlings or root stocks are used for planting, the transplanting time is from June to August in a rainy season, the seedlings or the root stocks are planted in the holes at the interval of 20*20 cm, the hole depth is 10-15 cm, and the holes are covered with soil until buds on seed stems can be covered; step four, simple management: watering, fertilizer application and pesticide spraying are not required. The technical program is simple and easy to implement; the cost is very low, and a large quantity of funds and labor can be saved; most importantly, the produced crude drug is safe and effective.