Platelets of 26 x 10⁹/L are serious and may have a bleeding tendency, making them vulnerable to life-threatening conditions such as cerebral hemorrhage. The normal range of platelets is (100~300)×10⁹/L. Thrombocytopenia can cause prolonged bleeding time and hemorrhage in case of severe injury. 1.When platelet count <50×10⁹/L, mild injury can cause skin mucosal purpura. 2. When the platelet count is >50×10⁹/L and the platelet function is normal, patients are less likely to have spontaneous bleeding. 3. When the platelet count is <20×10⁹/L, spontaneous bleeding often occurs. It is generally recognized that when the platelet count <20×10⁹/L, prophylactic platelet input is required. Thrombocytopenia is recognized when the platelet count is less than 100 × 10⁹/L. Common causes of thrombocytopenia include aplastic anemia, acute leukemia, primary thrombocytopenic purpura, hypersplenism, disseminated intravascular coagulation, and giant platelet syndrome. Platelet 26×10⁹/L is very serious, prone to cerebral hemorrhage and other organs bleeding and life-threatening, thrombocytopenia may have other causes, it is recommended to visit the hospital in a timely manner, to identify the cause of the disease, under the guidance of the physician timely treatment.