The invention discloses a power load prediction method based on economic data, which includes the following steps: selecting economic data parameters related to power load prediction; quantitatively analyzing the relationship between the economic data parameters and power consumption; using a variety of prediction models to predict power load; calculating the weight value of each prediction model; and calculating the final predicted value of power load. According to the power load prediction method of the invention, power load is predicted based on economic data, and a final power load prediction result based on economic data is obtained using a scientific method according to various load prediction results. Therefore, compared with the existing single load prediction method, power load can be predicted more accurately using the method of the invention, and the method has high prediction accuracy and a good effect.