Recovery from reoccurring anemia after treatment usually takes six months. It depends on the effect of the treatment, your physical condition, and the severity of the anemia. Retroviral anemia is a kind of refractory anemia, which is a bone marrow hematopoietic failure disorder caused by multiple etiologies. The prognosis of recovery time for remittent anemia depends on the type of anemia, the degree of bone marrow failure, the age of the patient, and the early or late treatment. 1. Severe remyelination has been treated with various treatments in recent years, such as allogeneic hematopoietic stem cell transplantation, etc. However, the overall effect is not satisfactory, and it can be life-threatening due to cerebral hemorrhage, severe infections, etc., and 1/3~1/2 of the patients can die in a few months to a year. 2. About 80% of the patients can achieve remission after treatment of chronic reocclusion, but there are still many patients with prolonged illness, and a few patients can recover completely. Specific drugs include cyclosporine, anti-thymocyte globulin and so on. The specific recovery time of patients should be based on the severity of the disease, treatment effect and other circumstances, and can not be generalized. Specific treatment should be carried out under the guidance of physicians.