Li C, Tang X, Zheng X, et al. - Researchers reported a systematic review and meta-analysis of population-based and clinic-based studies, the prevalence, and incidence of oral lichen planus (OLP) was conducted utilizing 3 electronic medical databases (Cochrane Database of Systematic Reviews, Embase, and MEDLINE) from their inception to March 2019, in order to analyze the prevalence and incidence of OLP. In total 46 studies, the overall pooled estimated prevalence of OLP was 0.89% among the general population (n = 462, 993) and 0.98% among clinical people (n = 191, 963). The study suggests that it recognized the global prevalence and incidence of OLP in terms of its spatial, temporal, and population distribution. Among the general population and clinical patients, the pooled prevalence of OLP was 0.89%, 0.98%, respectively. Moreover, a greater prevalence of OLP was located in non-Asian countries, among women, and among people 40 years and older. Because of the high heterogeneity of the incorporated studies, the conclusions shall be viewed cautiously.