Allergic purpura nephritis is one of the main comorbidities of allergic purpura in children, which is often clinically manifested by hematuria and proteinuria of different degrees. The author, in the clinical treatment of this disease, once found that the child has the tendency to Yang Qi deficiency timely and early warm Yang medicine treatment, often received good results. In clinical practice, I found that many children have clinical manifestations of Yang deficiency, such as lack of vital energy, lack of expression, lack of breath and lazy speech, and fear of wind. Even when fever is present, some children still only show localized symptoms such as congestion in the pharynx, but the rest are signs of Yang deficiency. The author believes that this disease is mostly due to deficiency of Yang energy and deficiency of the root and symptoms. The actual results are always very good. The disease into the Shao Yin, evil ambush in the inside, damage Yang Qi, should start from supporting Yang, warm Yang, restore Yang Qi in the kidney, so as to hold the evil and out. 1, allergic purpura nephritis at the beginning, at the same time there are skin bleeding spots, the tongue is light red, the coating is thin yellow generally to lift the spot soup (angelica, red peony, dahurica, ascending mushroom, a bead) combined with the transformation of the submerged Yang Dan formula (roasted licorice, sand, fried cypress, turtle plate, sophora). Sheng Ma and Ge Gen lift Yang Ming meridian evil Qi out of the Sun’s surface to restore the operation of Wei Qi, Red Peony and Licorice combined to harmonize Ying and Wei. In Shengma, the Yangming meridian is lifted out of the poisonous evil, with dahurica, to penetrate the evil outside, angelica, red peony to clear the heat of the Ying and Wei, and Aju to invigorate the blood and combine the camp. The combination of Glycyrrhiza glabra, Radix et Rhizoma gastrodiae and Radix et Rhizoma subterraneae (Glycyrrhiza glabra, Radix et Rhizoma gastrodiae, Radix et Rhizoma sibiricum) is a combination of Glycyrrhiza glabra, Radix et Rhizoma sibiricum and Radix et Rhizoma sibiricum. The combined use of all the herbs will bring about the effect. 2. If the spleen and yang are damaged and dampness is blocking poor appetite, we can use Ping Gastric San or Li Zhong Tang, replace Atractylodes Macrocephalae with Atractylodes, add Qian Yang Dan, and treat the spleen and kidney together, with thick and greasy tongue and dry stool and slippery pulse. 3. Those with obvious Yang deficiency edema and protein in urine are treated with Zhen Wu Tang combined with Si Wei Tang or Zhen Wu Tang combined with Xiang Sha Li Zhong Tang with addition and reduction. 4. Regarding the use of hemostatic drugs, San Qi and Jia Zhu are often used together or alone to obtain the dual effect of invigorating and stopping bleeding. 5, about the use of warming Yang medicine and heat clearing medicine together. The allergic purpura nephritis patients, especially those who are not cured for a long time will repeatedly appear upper respiratory tract infections, warming Yang medicine and heat detoxification drugs used together will quickly achieve the effect of heat receding local lesions dissipated. The author believes that once the fine sinking pulse must be used to warm Yang medicine, floating pulse if the tongue is tender yellow moss is not dry can still use warm Yang medicine. If there is still less Yin disease, Yang deficiency fever, despite the high body temperature, but want to get close to the clothes, heat in the skin, cold in the bone marrow, this situation in the allergic purpura nephritis also repeatedly seen, as long as the use of warm yang relieves the table will be heat receding body peace, sore throat also stop. 6, about the dosage of the seeds. The author’s experience is that the initial dosage should be small, no adverse reactions can gradually increase the amount until effective, or on this basis slightly reduce the amount, continuous use.