Sensitivity analysis is an important method primarily used to assess the robustness and reliability of the combined results of meta-analysis. It is a commonly used sensitivity analysis method to combine the effect size after eliminating each of the included studies, or after changing the inclusion or exclusion criteria or eliminating certain types of studies. For possible low-quality studies, sensitivity analysis is required. If the heterogeneity of the included literature is significant, in order to ensure the credibility of the research results, we will conduct sensitivity analysis by excluding each included study separately, so as to improve the research quality.