This paper analyzed the anomaly characteristics of time scanning of 5 seismicity parameters indicating characteristics of seismic activity before moderate earthquakes with ML≥4.5 in Guangxi. The results show that the precursory anomalies appearing before moderate earthquakes can be recognized through the analysis on the 5 seismicity parameters; the anomalies are remarkable before moderate earthquakes.These seismicity parameters are meaningful for the prediction of the moderate earthquake. Seismic activity before moderate earthquakes in Guangxi was enhanced obviously.