The symptoms of anaphylactic purpura relapse are somewhat similar to the initial symptoms. If the rash disappears completely and reappears again, or if it is accompanied by abdominal pain, joint swelling and pain, or if it can cause kidney damage, the symptoms of recurrence and the initial one are the same. However, Henoch-Schönlein purpura is a chronic process, so the recurrence must have a lot to do with the early treatment and follow-up, as well as the adjustment of life. After initial treatment, such as disappearance of rash, relief of gastrointestinal symptoms, and disappearance of joint swelling and pain, children with purpura should be followed up in outpatient clinics for a long period of time, and the urine should be checked regularly, because changes in urine often indicate kidney damage. Kidney damage is easy to appear within 6 months of the onset of the disease, so it is necessary to check the urine frequently, to review, to see if there is edema, proteinuria, if there is any of the above conditions should be actively treated. If after 6 months, the kidneys have been free from problems, you can stop the review. However, some symptoms may reappear after 6 months, and there may be recurrence of the disease, we should actively look for the reasons of recurrence, mostly infections, strenuous exercise, external environmental stimuli, which may cause recurrence of the disease, that is, recurrence, so if the recurrence of the disease must go to the hospital to check whether there are any triggering factors, and then give the re-treatment.