The invention provides a no-tillage ecological tending method for rheum tanguticum Maxim.ex Balf.. The method includes steps of seed selection, tending zone selection, sowing, tending management and harvesting. The provided method can cultivate high-quality genuine rheum tanguticum Maxim.ex Balf. medicinal materials, and has characteristics of maximumly alleviating bad ecological environment impacts, saving time and labor and lowering costs, so that the sustainable development of China-Tibet medicinal material industries can be promoted, and therefore, the method has good popularization and application values.