The reason why purpura patients should walk less is that the cause of allergy in many purpura patients is hard to find and cannot be found, but some joint type of allergic purpura is easily induced by walking, and there are serious consequences, such as bleeding around the body. Clinically, for this condition, patients should be instructed to walk as little as possible to avoid relapses. As purpura, the renal type of allergic purpura is the most serious, because the patient will develop renal changes, and hematuria, proteinuria, tubular urine, and even edema, hypertension and renal failure. Therefore, patients with a series of conditions need to rest and try to exercise less or reasonably, and strictly refuse to walk, run and other strenuous exercises, otherwise the condition will repeatedly aggravate, and lead to the appearance of nephrotic syndrome and renal failure of the kidneys, etc.