Low platelet can appear skin mucous membrane bleeding, gum bleeding, blood in stool, blood in urine, menorrhagia and other manifestations. For patients with the above symptoms, it is recommended to go to the hospital in time to complete the relevant examinations and make a clear diagnosis. 1. Skin and mucous membrane bleeding: sudden and widespread skin and mucous membrane bruising, ecchymosis and hematoma. 2. Bleeding from nose and gums: nosebleeds and blood blisters in the mouth often appear. 3. Blood in stool, blood in urine: patients with low platelets may have gastrointestinal and urinary bleeding, which may be manifested as blood in stool and blood in urine. 4. Excessive menstruation: female patients may have symptoms of increased menstrual flow, prolonged menstrual period and bleeding. 5. Intracranial hemorrhage: it usually appears in patients with severe thrombocytopenia, which can cause intracranial hemorrhage and lead to death. Patients may have symptoms such as coma, accelerated heart rate, decreased blood pressure and unstable breathing. For patients with the above symptoms, it is recommended to go to the hospital in time to clarify the cause of the disease and get timely treatment under the guidance of physicians.