The typing criteria of lupus nephritis require kidney puncture and pathological examination of the patient for classification. Nowadays, the classification is still mainly based on the International Society of Nephrology and the International Society of Pathology, which mainly classify lupus nephritis into six types. Type I-VI criteria are as follows: 1. Lupus nephritis type I refers to mild tethered model lupus nephritis: mainly refers to the deposition of immune complexes in the tethered area, but there is no obvious manifestation under light microscopy; 2. Type II refers to tethered hyperplastic lupus nephritis: mainly immune complexes are also deposited under the tethered area, and proliferation of tethered cells and tethered base can be seen under light microscopy; 3. Type III refers to focal hyperplastic lupus nephritis: mainly endothelial cell proliferation and immune complex proliferation mainly under the endothelium, accompanied by glomerular endothelial cell involvement, but generally less than 50% of the glomeruli are involved; 4. Type IV refers to diffuse proliferative lupus nephritis: the glomeruli are more extensively involved, generally greater than 50%, accompanied by endothelial cell proliferation and immune complex deposition under the endothelium; 5. Type V refers to membranous lupus nephritis: generally refers to endothelial 5. Type V refers to membranous lupus nephritis: the proliferation of endothelium and thylakoid membrane is not very obvious, but the thickening of basement membrane is mainly accompanied by the deposition of immune complexes under the epithelium; 6. Type VI refers to sclerosing lupus nephritis: more than 90% of glomeruli have sclerosis, and most have no active changes.