Aplastic anemia is related to rheumatoid, rheumatoid arthritis can be secondary to aplastic anemia. 1. Rheumatoid arthritis is an autoimmune disease, early mainly joint involvement, with the development of the disease, all systems of the body will be involved, blood system involvement mainly manifested as anemia, thrombocytosis, Felty syndrome and so on. 2. Aplastic anemia is the failure of bone marrow hematopoietic function due to various reasons and the decrease of whole blood cells, which is mainly manifested as anemia, bleeding and infection. Aplastic anemia can be divided into primary and secondary according to the triggers. Autoimmune diseases are the important causes of secondary aplastic anemia. When rheumatoid arthritis involves bone marrow, bone marrow hematopoiesis decreases, secondary aplastic anemia. Specific diagnosis and treatment should be carried out under the guidance of a physician.