The invention provides a system and a method for forecasting and analyzing a load of a resident user. The system comprises a resident user load forecasting terminal and a load forecasting analyzing master station, wherein the resident user load forecasting terminal is connected with the load forecasting analyzing master station through carrier communication or Ethernet communication. The system for forecasting and analyzing the load has the functions of data collection and data analysis; electricity utilization data of the resident user of other electricity utilization system is obtained and is compared and analyzed with a load forecasting data; the load forecasting data also can be transmitted to the other system; the data use ratio is increased; the problem of insufficient interactivity between systems of a power supply enterprise is solved; the forecasting level for the load of the resident user is greatly increased; and a basis is supplied to the scheduling of a power grid, the control on the generated energy of a power plant and the accessing of clean energy.