Most patients with chronic leukemia can survive for a long time with medication, and how long it lasts varies from person to person. Slow-grain leukemia belongs to the clonal proliferation of hematopoietic stem cell abnormality disease, mostly in the age group of 30 ~ 40 years old adults, the onset of slow, early symptoms are not obvious. In the treatment of slow-grain leukemia, the main long-term use of targeted drugs imatinib, dasatinib, etc., can inhibit the gene mutation of slow-grain leukemia, to achieve a complete remission of the disease, so that patients can survive for a long time. Patients with chronic leukemia should insist on taking targeted drugs such as imatinib, and after 3 months of drug treatment, they can go to the hospital to review the blood routine to see if the indicators are normal. If the indicators improve after the targeted treatment, it means that the treatment is effective, and you can continue to insist on taking it for a long time to prolong the survival period. If the treatment is ineffective, you need to adjust the dose or replace the dasatinib and other drugs treatment. Patients with chronic leukemia need to follow the doctor’s instructions to take drugs, can effectively control the condition, prolong the survival time.