Hepatitis B patients with small red dots on the body, you need to pay attention to the number and dispersion of small red dots, and observe whether there is local itching and other discomforts appear. Generally, it is considered to be caused by allergy or other skin diseases, or it may be caused by thrombocytopenia or deterioration of coagulation function, liver function and causing subcutaneous bleeding spots, and spider nevus if it occurs in acute hepatitis stage. If there is localized itching sensation in the area with small red dots on the body of hepatitis B patients, it is considered to be caused by allergy or other skin diseases. If the number of small red dots is large and the distribution area is wide, the patient needs to take further blood, check the blood routine, liver function, coagulation function, to see if it is thrombocytopenia or deterioration of coagulation function, liver function and cause subcutaneous bleeding spots. If the latter is the case, the patient’s life requires the student to actively protect the liver, and effective treatment can be carried out through intravenous infusion of plasma, albumin and other drugs. If the patient’s liver function is poor, the patient’s condition may be improved and relieved after antiviral treatment and adequate rest. If it occurs in the acute hepatitis stage, it is relatively serious and may be spider nevus. Liver ultrasound, liver function and other aspects of the examination should be done to determine the physical condition.