Double cone rotating vacuum drier is a new style drier that integrates mixing and drying in its one body and equips with condensor and drier to consist of vacuum drying apparatus (If the solvent does not recover, the condensor may be not used). The drier is advanced in design, simple in inner structure, easy for clean, to discharge all raw material, convenient in operation, lowing the strength of labor and improving work environment. Meanwhile raw material is rotating accompanying with the rotating of container, the wall of container can not accumulate raw material. Therefore its coefficient of thermal transmission is high and its drying speed is quick. It can not only save energy source but also make raw material dry uniformly and have good quality. It can wide apply to dry raw materials of pharmaceutical industry, chemical industry, foodstuff industry, dyestuff industry and so on. It is in conformity with the requirements of "GMP".