The aim of this study was to analyze the risk factors associated with unfavorable outcomes in children with IgA vasculitis with nephritis (Henoch-Schőnlein purpura nephritis) (IgA-VN). these databases PubMed, Embase, and Web of Science were searched in this meta-analysis. The data were extracted to perform pooled analysis, heterogeneity testing, subgroup analysis, sensitivity analysis, and publication bias analysis.