Due to the extensive use of chemical fertilizers in agriculture in southern China, the utilization rate of phosphorus is low and the agricultural non-point source pollution is serious. Ecological ditch is an important measure to intercept nitrogen and phosphorus pollution from agricultural non-point sources. Influenced by the characteristics of ecological ditches and environmental factors, the removal efficiency of ecological ditches in different studies varies greatly.Through the literature retrieval platform CNKI and Web of Science, relevant literatures on the migration and transformation process of phosphorus in ecological ditches were collected. After screening under the following conditions (dynamic experiments, outdoor single ecological ditches, etc.),an ecological ditches database was established, which contained a total of 81 experiments and 334 items of data. Statistical analysis showed that the average removal efficiency of TP by ecological ditches was 47.16%. Based on the Mann-Whitney U test and K-W test, the effects of different factors (vegetation type, ditch material type, strengthening measures, climate temperature, hydraulic retention time) on the TP removal efficiency of ecological trenches were analyzed.The results showed that the mean rank of the removal efficiency of TP in the ecological ditches covered with selected vegetation was 170.99,and the average removal efficiency was 47.97%, which was higher than that of the ecological ditches covered with natural vegetation, the mean rank was 132.10, and the average removal efficiency was 38.98%.The mean rank of the TP removal efficiency of the ecological ditches covered with various selected vegetation was 193.69, and the average removal efficiency was 53.93%, which was significantly higher than the values corresponding to single selected vegetation, various natural vegetation, and single natural vegetation type.The mean rank of the TP removal efficiency of the semi-lined ecological ditches was 183.85, and the average removal efficiency was 51.04%, which was higher than that of the whole soil ecological ditches, the average rank of TP removal efficiency was 137.18, and the average removal efficiency was 39.98%.The mean rank of the TP removal efficiency of the semi-lined ecological ditches was 131.31, and the average removal efficiency was 58.22%, which was significantly higher than the values corresponding to the ecological ditches with fully lined slope and the ecological ditches with semi-lined slope and bottom.The mean rank of the TP removal efficiency of the ecological ditches with artificial substrates was 116.12, and the average removal efficiency was 53.53%, which was higher than that of the ecological ditches with interception type.When the climate temperature was between 25 and 35°C, the average rank of the TP removal efficiency of the ecological ditches was 119.85, and the average removal efficiency was 57.18%, which was significantly better than the corresponding values of the ecological ditches at ＞0～15°C and ＞15～25 °C. In different hydraulic retention time ranges, the mean rank value of TP removal efficiency for ecological ditches over 24h was 84.80 and the average removal efficiency was 72.12%, which was significantly higher than the mean rank value and average removal efficiency of TP for ecological ditches with hydraulic retention time of ＞0～12h and ＞12～24h.The research results of this paper can provide technical support for the assessment of phosphorus interception effect in ecological ditches and the design of ecological ditches.