The difference between remyelination and mds is mainly reflected in the difference in the number of bone marrow hematopoietic cells and peripheral blood cells, as well as the difference in morphology. Re-obstruction, the full name of aplastic anemia, caused by a variety of causes of bone marrow hematopoietic failure, presenting a syndrome of total blood cell reduction, mainly manifested as anemia, bleeding and infection and other symptoms. mds is myelodysplastic syndrome, which is a neoplastic disease originated from hematopoietic stem cells, mainly manifested as abnormal bone marrow hematopoietic function, abnormal development of blood cells, and even cause refractory hematopoiesis, hematopoietic failure, and can be transformed to acute leukemia. 1. Cell number: peripheral whole blood cells in aplastic anemia are reduced, and hematopoietic cells in bone marrow are also obviously reduced, especially megakaryocytes are obviously reduced. In patients with myelodysplastic syndromes, the percentage of reticulocytes in the peripheral blood is normal or elevated, and the percentage of early cells in the bone marrow is not low or increased. 2. Cell morphology: aplastic anemia bone marrow granules are mainly non-hematopoietic cells, megakaryocytes are reduced, chromosomal karyotype is mostly normal, and bone marrow proliferation is reduced or extremely reduced. Myelodysplastic syndromes have abnormal cell development, sometimes immature nucleated red blood cells can be seen, about half of the patients have abnormal karyotypes, and bone marrow proliferation is still active to active state. The difference between cataract and myelodysplastic syndrome can also be reflected in other aspects, need to be combined with blood routine, blood smear and other tests and their own symptoms to distinguish, it is recommended to go to the hematology department of the hospital in a timely manner, under the guidance of the physician to clearly differentiate between the diagnosis, and timely treatment, so as to avoid delaying the condition.