The invention provides a new medicament for treating leukemia, which is prepared from 39 raw material drugs, such as taxus chinensis (tree bark), tender catchweed bedstraw herb, prismatomeria tetrandra, isatis indigotica fort, tuber fleeceflower stem, Yunnan fringed iris herb, fructus corni, hemlock parsley, turtle shell and the like, wherein the taxus chinensis (tree bark) contains 'taxol' which is the top anti-cancer medicament in the world, can be combined with trace of albumin, so that the albumin is accelerated to be aggregated, mitosis of cancer cells can be inhibited, and proliferation of the cancer cells can be effectively stopped. The medicament also comprises the tender catchweed bedstraw herb, suncured ginseng, prismatomeria tetrandra, isatis indigotica fort, tuber fleeceflower stem, Yunnan fringed iris herb, fructus corni, hemlock parsley and turtle shell, so that growth and development of the cancer cells can be controlled, the cancer resistance of a human body can be reinforced, the circulation and metabolic function of the human body can be improved, virus accumulated in the human body is removed outside the body through urine and defecation to achieve the function of preventing cancer. The medicament adopts the Chinese medicaments capable of nourishing yin and supplementing kidney, supplying vital energy, nourishing and activating blood, tonifying qi and controlling blood, softening hardness to dissipate stagnation, removing toxicity and tonifying middle-Jiao and coordinating drug actions of a prescription, administration is increased or reduced according to the course development and classification of the leukemia to achieve the best treatment effect. 38 leukemia cases are treated non-selectively in clinical application, and the total effective rate is over 90 percent.