The present invention relates to one kind of pirarubicin liposome and its preparation process. Pirarubicin possesses relatively high antitumor effect but certain toxic side effect, and the present invention aims at providing one kind of pirarubicin liposome with obvious curative effect, less toxic side effect and good targeting. The pirarubicin liposome consists of medicine component and supplementary material, the medicine component is pirarubicin or pirarubicin hydrochloride, and the supplementary material includes phospholipid and cholesterol. It may be in injection or freeze dried preparation. The pirarubicin liposome is used in treating different kinds of cancer, such as bladder carcinoma, leukemia, mammary cancer, liver cancer, gastric cancer, etc. and has relatively high curative effect. |