Abstract: Fluctuation monitoring method based on the mid-layer data comprising a monitoring component of the customized instance, mid-layer telephone traffic statistics, a component of self learning telephone traffic and a drawing component of multidimensional traffic monitor. 1) Modeling of telephone traffic status is based on social science empirical model, and uses telephone traffic per day as an analysis granularity, which is composed of three dimensions—time, region and business. 2) the mid-layer of the telephone traffic statistics is calculated based on a monitoring target in regular time. 3) the self learning component of telephone traffic studies and forecasts based on monitoring data. 4) the drawing component of multidimensional traffic monitor will extract data from in the mid-layer of traffic data statistics.