Platelets 35 x 10⁹/L is not normal, platelets generally have a normal range of (100~300) x 10⁹/L, platelets <100 x 10⁹/L is called thrombocytopenia, therefore platelets 35 x 10⁹/L, below the lower limit of normal value, is abnormal. The causes of thrombocytopenia are impaired platelet production, increased destruction or consumption of platelets, and abnormal distribution of platelets. It can be seen in acute leukemia, aplastic anemia, primary immune thrombocytopenia and so on. Platelets 35×10⁹/L may appear skin petechiae, nosebleeds, gum bleeding, etc., and in severe cases, even internal bleeding, etc., should be timely and appropriate examination of the causes of thrombocytopenia, and treatment for the cause. Thrombocytopenia treatment includes platelet transfusion, drug treatment, surgical treatment, etc. Drug treatment such as application of recombinant human thrombopoietin, eltrombopoietin, etc., glucocorticoid such as prednisone, dexamethasone, etc.. Patients with low platelet should seek medical treatment in time and follow the doctor’s instructions for examination and treatment under the guidance of professional doctors.