Facial purpura can appear as petechiae and petechiae, and some of the rashes can fuse into large patches that do not fade when pressed. The clinical treatment requires oral administration of compound rutin tablets, vitamin C capsules, and calcium carbonate D3 tablets in order to reduce small vein, small artery, and capillary permeability and reduce extravasation of red blood cells. If the effect is not satisfactory, it can be combined with the oral administration of compound glycyrrhizin capsules, two capsules three times a day. If the effect is still unsatisfactory and there is a large number of new rashes fused into larger patches, then immediate intramuscular injection of compound betamethasone injection is needed to provide anti-inflammatory and immunosuppressive therapeutic effects. If accompanied by pain in the joints of the extremities, which can lead to arthritic purpura, then it is necessary to apply Leigengtang orally to strengthen immune regulation and anti-inflammatory treatment.