Platelet 10 means that the platelet count is 10×10⁹/L. There are various reasons for the severe reduction of platelet count, such as aplastic anemia, primary immune thrombocytopenia, systemic lupus erythematosus, liver disease, drug use, malignant diseases of the blood system, and so on, and the length of time that a patient survives varies. 1. Aplastic anemia: patients’ bone marrow hematopoietic function is reduced, anemia, bleeding and other symptoms, and patients’ platelet count is severely reduced. 2. Primary immune thrombocytopenia: Acquired autoimmune disease, which is caused by the body’s immune reaction to platelet-related antigens resulting in thrombocytopenia. 3. Systemic lupus erythematosus (SLE): a chronic diffuse connective tissue disease that can invade multiple systems throughout the body, patients may have anemia and thrombocytopenia. 4. Liver disease: If patients have splenomegaly and hypersplenism, it can lead to thrombocytopenia. 5. Drug use: taking antiplatelet drugs such as aspirin, clopidogrel; antibiotics such as quinolones, chloramphenicol, etc., can lead to thrombocytopenia. 6. Malignant diseases of the blood system: such as acute leukemia, can also cause severe thrombocytopenia. When thrombocytopenia, there is a risk of bleeding, especially when thrombocytopenia is severely reduced, go to the hospital as soon as possible for further diagnosis and treatment under the guidance of the doctor.