In recent years, the long-term survival of patients with systemic lupus erythematosus (SLE) has increased to more than 90%, but there are still quite a few unresolved problems. Although the main objective of the concept of «Treatment of SLE to target» is «remission of symptoms and absence of organ damage», it was recognized that there is currently no generally accepted definition of remission in SLE. The article discusses different variants of the definition of «remission» in SLE.