Lupus erythematosus, also known as systemic lupus erythematosus, is a chronic autoimmune disease involving multiple systems and organs. Patients' serum contains various autoantibodies, with the main pathological changes being inflammatory reactions and vascular abnormalities. Most patients exhibit butterfly-shaped erythema on the bridge of the nose and cheeks, which is the most characteristic manifestation of lupus erythematosus. The clinical presentations of systemic lupus erythematosus are diverse, generally characterized by the "four multiples": involvement of multiple systems, multiple organs, multiple autoantibodies, and a higher prevalence among women of childbearing age. Without proper and effective treatment, the mortality rate is high, with the main causes of death being infections, renal failure, and damage to the central nervous system.