Renal purpura is mainly treated with hormones and immunosuppressants with anti-allergy drugs. Allergic purpura is divided into five types, including skin type, joint type, abdominal type, renal type and compound type. The kidney type is one of the heavier types, mainly caused by allergy to certain drugs or food, such as penicillin drugs, fish and shrimp food, etc. Since it is caused by allergy, anti-allergy medication should be given. The more commonly used anti-allergy medications are loratadine, cetirizine, calcium gluconate, vitamin C, etc. The effect of these anti-allergic drugs alone is not good, you need to apply hormone at the same time, the more commonly used hormone is prednisone. If the application of these drugs is not good, you can also consider the application of immunosuppressants, which can work with hormones to inhibit the inflammatory response, the more commonly used immunosuppressants are mainly cyclophosphamide.