Acute leukemia constipation fastest laxative methods include under the guidance of a doctor with diarrhea drugs (such as Keselu), massage abdomen, artificial stool and dietary modification. 1. diarrhea drugs: patients can use some diarrhea drugs under the guidance of the doctor, such as Keselu, in order to soften the stool, stimulate peristalsis of the role of intestinal peristalsis, so as to relieve the symptoms of constipation. 2. Massage the abdomen: massage from the abdomen to the lower abdomen in clockwise direction to adjust the function of spleen and stomach, enhance gastrointestinal peristalsis and facilitate defecation. 3. Artificial stool: If the medicine can not relieve constipation, you can take artificial stool, in the index finger coated with lubricant, into the patient’s anus to pull out the fecal stone, pay attention to the action to be light. 4. Dietary regulation: leukemia patients have a high incidence of constipation due to irrational dietary structure, small activity, change of defecation habits, adverse drug reactions, etc. Therefore, attention should be paid to dietary regulation. Therefore, we should pay attention to dietary regulation, coarse and fine matching, eat more fruits, vegetables and coarse grains, and increase the intake of water to promote intestinal peristalsis, which is conducive to defecation. Due to the critical condition of acute leukemia, the above treatment measures and medication need to be carried out under the guidance of a doctor, and the cause of leukemia is more important to treat, the drugs include cytarabine, Zoerythromycin and so on.