There is no authoritative information on how long it takes to recover from simple skin-type allergic purpura in general, and it usually recovers in 20~30 days, and the specific recovery time should be judged according to the patient’s condition. It is recommended that patients take medication and other treatments in a timely manner. 1. There is no clear clinical data on how long it takes to recover from simple cutaneous purpura, which generally takes 20-30 days to recover, but the recovery time for patients will vary according to their different conditions. If the patient’s condition is relatively mild, the recovery time will be around 20 days. If the patient’s condition is more serious, the recovery time will be around 30 days, and the patient with simple skin-type allergic purpura should seek medical treatment in time to take treatment. 2. Patients with simple skin-type purpura can take oral prednisone acetate tablets, hydrocortisone acetate tablets and other glucocorticosteroids as prescribed by the doctor, as well as oral loratadine tablets, chlorpheniramine maleate tablets and other antihistamine drugs. Patients can also take other treatments, mainly plasma replacement and other treatments. The recovery time of patients with simple skin-type allergic purpura cannot be generalized, and patients should seek medical treatment in time and follow the doctor’s instructions.