According to the mean values of SAR, C3, ACR, and the results of anti‐dsDNA, patients with active SLE were divided into high SAR group, low SAR group, high C3 group, low C3 group, high ACR group, low ACR group, anti‐dsDNA positive group, and anti‐dsDNA negative group. Here, C3 is linked to systemic lupus erythematosus.