Indicators of SLE activity: 1. Patients should have corresponding symptoms of activity within the last 10 days, such as the appearance of a new rash, re-emergence of arthralgias, hair loss, oral ulcers, etc. 2. Routine blood tests suggest a decrease in the triple system, a further decrease in complement, and a further increase in double-stranded DNA antibodies. Or there are inflammatory indicators, such as a significant increase in blood sedimentation and C-reactive protein. There is also hyperglobulinemia, a positive rheumatoid factor, or a routine blood test that indicates a significant increase in platelets. The above clinical manifestations and activity indicators can be used to determine that the patient is currently in the active stage of SLE.