The invention discloses a medicament for treating leukemia comprising components as follows, whose weight unit is mg, VA 5-10mg, VE 100-300mg, VD3 0.5-1mg, VB1 30-60mg, VB2 10-30mg, VB6 30-60mg , nicotinic acid 50-300mg, VC 100-300mg, biotin 0.3-0.9mg, pantothenic acid 25-60mg, folic acid 5-15mg, VB12 0.125-0.5mg, zinc 10-15mg, ferrum 2-4mg, troxerutin 120-360mg, birutan 10-40mg and aspirin 0-600mg. The invention receives the theory of the traditional Chinese and western medicine, which is made from seventeen medicaments selected carefully and composed scientifically. The invention indicates a radical approach for treating cancer completely and provides the medicament with a high healing and small side effects in which treatment of cancer and alimentology are associated perfectly.