The most common symptoms in hematology include anemia, fever, infection, bleeding or bleeding tendencies, and bone and joint pain. Hematological disorders in the Hematology Department refer to diseases that involve the blood, hematopoietic organs and hematopoietic tissues, either primary or predominantly, and include all types of red blood cell disorders, white blood cell disorders, lymphocyte and plasma cell disorders, hematopoietic stem cell disorders, and hemorrhagic disorders. Their common feature is the change of blood components in the peripheral blood due to structural and functional abnormalities in the bone marrow, spleen, lymph nodes, and other hematopoietic organs and hematopoietic tissues, which leads to the development of anemia, fever, infections, hemorrhage or hemorrhagic tendencies, and bone and joint pain. If you feel unwell or experience the above symptoms, it is recommended that you go to a specialized hospital in time to have the cause of the disease clarified and the treatment standardized under the guidance of a physician.