The present invention provides a kind of coating methods that Chinese medicinal capsule is moisture-proof, its characteristic is in what, processing is coated to the drug powder in the softgel shell of the capsule, specifically includes the following steps: the drug powder is added in bottom spray type fluidized bed container, it is blown into air-flow from bed lower part by sieve plate, makes what fluidized state at material, keeping the temperature of drug powder is 40-60 C, inlet temperature is 50-70 C, atomisation pressure 100kpa-400kpa； Film coating liquid is uniformly sprayed into simultaneously, drug powder is made to coalesce granulating, and the drug powder of overlay film is arrived through repeated spray and the dry Hou of the universe, is filled into capsule shells. Method of the invention, Chinese medicinal capsule obtained can realize that good oxygen barrier humidity resistance, stability be good, the storage of easy what, can be widely applied the preparation of what Chinese medicine capsules.本發明提供了一種中藥膠囊防潮的包衣方法，其特徵在於，對所述膠囊的囊殼內的藥物粉末進行包衣處理，具體包括以下步驟：將所述藥物粉末加入底噴型流化床容器中，從床層下部通過篩板吹入氣流，使物料處於流化狀態，保持藥物粉末的溫度爲40-60˚C，入口溫度爲50-70˚C，噴霧壓力爲100kpa-400kpa；同時均勻噴入薄膜包衣液，使藥物粉末聚結成粒，經反復噴霧和乾燥後，即得到覆膜的藥物粉末，灌裝入膠囊殼中即可。本發明的方法，製得的中藥膠囊可實現良好的隔氧防潮性能、穩定性好、易於貯存，可廣泛的應用於中藥膠囊劑的製備。
