Abstract: Define the importance of multi-scale economic dispatching in power system, analyze the influence of wind power grid connection on system dispatching, and discuss the application potential of multi-parameter forecasting technology; construct 24 h day dispatching, 4 h rolling dispatching and 15 min real-time dispatching model in detail, considering the uncertainty of wind power prediction, show how to optimize the dispatching strategy through multi-parameter forecasting technology; confirm the effectiveness of multi-parameter forecasting in improving dispatching accuracy, and dealing with the volatility and intermittently of wind power. The results show the necessity and effectiveness of comprehensively using multi-parameter prediction technology in the economic dispatching of power system.