Purpura is considered to be cured if the disease does not recur with the disappearance of clinical symptoms, normal laboratory results, and activities. Purpura is characterized by reddish-purple skin or mucous membranes, with bleeding spots 3 to 5 mm in diameter that do not fade when pressed. It can be caused by a variety of reasons, and the clinical manifestations of different causes vary. After a period of time (usually more than 3 months) after the regular treatment, the clinical symptoms disappear, that is, the skin purpura disappeared, no new rash; laboratory results are normal (including blood routine, urine routine, blood biochemical examination); the patient’s activities to return to normal, will not recur after strenuous activities, colds, fevers, and other infections do not recur, even if it is cured. Purpura has cause-specific and targeted treatment. Purpura caused by primary immune thrombocytopenia and disseminated intravascular coagulation needs to be treated with human gammaglobulin, coagulation factor agents and immunosuppressants (methotrexate). Symptoms caused by allergic purpura, etc., are improved with antihistamines (loratadine), vitamin C, and so on. Even after purpura is cured, care should be taken to avoid re-exposure to allergens, recurrent infections, etc. to avoid recurrence. Specific diagnosis and treatment should be carried out under the guidance of a physician.