Acute B lymphoblastic leukemia has a lifelong relapse-free status, which is mostly seen in the low-risk group or in early childhood onset, and some of the current patients can survive for a long time after active treatment. Acute lymphoblastic leukemia is known as acute B-lymphoblastic leukemia. If acute lymphoblastic leukemia strikes in young children or in childhood, or if the disease is low-risk, it can be well controlled by active treatment, with a high cure rate, and some of them can be lifelong relapse-free. If the attack occurs in old age, or if there are high-risk factors, it may be difficult to control the disease due to serious complications, failure of various organs, or inability to tolerate treatment, and the cure rate is usually low. Nowadays, most of the acute B-lymphoblastic leukemia patients can survive for a long time after active treatment, and some of them can live for a lifetime without relapse, so it is recommended to seek medical treatment in time.