Systemic lupus erythematosus (SLE) is a highly specific autoimmune disease that involves multiple systems due to abnormal immune activation. It is a classical diffuse connective tissue disease with autoimmune inflammation as its prominent manifestation. B cells are the core of systemic lupus erythematosus (SLE) pathogenesis. B Lymphocyte Stimulator (BLyS, also called BAFF) and A Proliferation-Inducing Ligand (APRIL) are signals for B cell maturation. B Lymphocyte Stimulator (BLyS) participates in promoting the development and maturation of B cells, while A Proliferation-Inducing Ligand (APRIL) participates in promoting the activation of mature B cells and the secretion of antibodies by plasma cells. Telitacicept is composed of the extracellular specific soluble portion of Transmembrane Activator and Calcium-modulating Cyclophilin Ligand (CAML) Interactor (TACI) and the Fragment crystallizable (Fc) segment of human Immunoglobulin G1 (IgG1). It is the only globally approved dual-target biological agent for the treatment of systemic lupus erythematosus (SLE) , blocking B Lymphocyte Stimulator (BLyS) and A Proliferation-Inducing Ligand (APRIL), hindering the development and activation of B cells, and the production of antibodies, comprehensively inhibiting the maturation, proliferation, and differentiation of B cells at different stages. In this study, the investigators will explore the adherence and influencing factors of telitacicept in systemic lupus erythematosus (SLE) patients, its effectiveness, and safety, providing a stronger basis for clinical management of systemic lupus erythematosus (SLE) patients.