The present invention provides an electric power device typhoon risk early warning method and system. The early warning method comprises the following steps: obtaining the moving route of the current typhoon, respectively calculating Euclidean distances between the moving route of the current typhoon and the moving route of each historical typhoon, and respectively calculating the similarities between the current typhoon and each historical typhoon according to the Euclidean distances and the similarity-Euclidean distance corresponding relation; calculating and obtaining the confidence coefficient of the electric power device of each influence degree influenced by the current typhoon; and if the confidence coefficient of the electric power device of any one influence degree influenced by the current typhoon of the electric power device is larger than a confidence coefficient, emitting corresponding early warning signals. The electric power device typhoon risk early warning method and system are high in accuracy and high in practicability.