Arthralgia is a common manifestation of lupus erythematosus, which is one of the manifestations of the disease activity, but it does not necessarily represent the seriousness of the disease, and should be assessed in conjunction with the involvement of other organs, and should not be generalized. Arthralgia is one of the common clinical manifestations of SLE, which is characterized by symmetric polyarticular swelling and pain, preferably in the joints of the fingers, wrists, knees, etc., usually without joint bone destruction. Joint swelling and pain can be used as one of the diagnostic bases of SLE and one of the evidences to evaluate the disease activity. However, joint swelling and pain does not necessarily mean that the disease is serious, and it should be combined with the involvement of other systems for comprehensive evaluation. It is recommended that SLE patients go to the hospital for standardized diagnosis and treatment under the guidance of a doctor, and have regular follow-ups. If there is any change in the condition of the patient, he/she should consult a doctor for a comprehensive assessment of his/her condition and treatment under the guidance of the doctor.