NOVELTY - Method for improving safety of traditional Chinese medicine injection, involves: concentrating traditional Chinese medicine extract raw liquid by film to remove inorganic ions, and removing impurity and macromolecule material by membrane filtration technique, where concentrating membrane has interception molecular weight of 150-300, and interception molecular weight of filter film is 8000-30000.    USE - For improving safety of traditional Chinese medicine injection (claimed).    ADVANTAGE - The method for improving safety of traditional Chinese medicine injection does not change material base and curative effect of original traditional Chinese medicine injection product, but effectively removes inorganic ions and impurities so as to improve safety and quality of traditional Chinese medicine injection. As compared to prior art methods such as traditional water extraction and alcohol precipitation, distilling and concentrating and electrodialysis; the method is short, has high efficiency, is low cost, has low energy consumption and high safety index, can be performed at normal temperature operation, is especially suitable for separating material while maintaining stability after purification, produces product of stable quality, and has wide application range, strong adaptability and flexibility in actual production. The separating and concentrating process can be continuously carried out, involves convenient regeneration for wide application range, maintains properties of water extract, has no influence to film, can thoroughly remove non-soluble impurities, inorganic ion and macromolecular substances from traditional Chinese medicine liquid, is energy-saving, has stable filter performance, produces clear and transparent material, is free from active component loss from traditional Chinese medicine, and fully ensures quality of product. Thus, process improves traditional Chinese medicine injection safety and quality, improves production efficiency and reduces environment pollution.