Allergic purpura (HSP) is an allergic disease with capillaritis as the main pathological change and belongs to autoimmune disease. It is clinically classified into simple skin type, joint type, abdominal type, renal type, and mixed type. The main clinical manifestations are symmetrical distribution of purple spots and petechiae on both lower extremities, which can be complicated by mucosal bleeding in the digestive tract, painful joint swelling, nephritis and angioneurotic edema. Most patients have a benign, self-limiting course, and most patients are cured within a few weeks after treatment, but there are also recurrent attacks or delays of several months or years. About 50% of patients have recurrent attacks of skin purpura, proteinuria, hematuria, arthralgia, and abdominal pain. However, there is still no uniform standard for the use of hormones, especially for children with HSP without urinary abnormalities or with hematuria only, whether to use hormones has been controversial. The use of hormones has been controversial. The treatment of HSP in TCM is characterized by evidence-based treatment and holistic principles, emphasizing the three factors, i.e., according to the person, time and place, and has the advantages of low side effects and low recurrence rate.