Chronic remittent syndrome, i.e. chronic aplastic anemia, requires 3 to 5 years of treatment, which varies with the degree of the disease, drug sensitivity, and so on. 1. Chronic aplastic anemia is a refractory blood disease characterized by anemia, infection and bleeding due to bone marrow hematopoietic failure and characterized by a decrease in whole blood cells. The treatment of this disease includes the use of androgenic drugs (testosterone propionate), bone marrow stimulants (monobasic haematopoietic alkaloids), hormones (prednisolone) and so on. Among them, androgenic drugs have a slow onset of action and usually take about six months. 2. Chronic aplastic anemia drug therapy, should adhere to more than 6 months, can adhere to more than 3 years, the efficiency can reach more than 90%. Even if the blood image reaches the normal index, the drug still can’t be stopped immediately, at least need to continue treatment for 2 years, in order to prevent the disease from recurring. Chronic aplastic anemia has a long course and requires long-term treatment, so you should maintain an optimistic mindset and actively cooperate with the treatment under the guidance of the doctor in order to achieve the ideal therapeutic effect.