In recent years, self-ligating brackets have been widely used in clinical treatment, because they have many unique advantages. Orthodontic wires have been fixed on self -ligating brackets by clips or slides without stainless steel ligatures and elastometric rings. More and more orthodontic scholars have concerned whether the special structure is good to periodontal health. The purpose of this paper is to summarize the clinical application status and prospects of self-ligating and conventional brackets on periodontal environments.