An intelligent identification and early warning method for abnormal events in an open scene in the power field based on edge calculation compresses and transplants an improved SSD target detection model to a mobile terminal, gives full play to the advantages of the edge calculation, and takes an Android terminal as an optimal scheme through experiments. According to the method, the Conv4 _ x feature layer and the Conv5 _ x feature layer in the VGG16 network are fused, and then the fused feature layer directly acts on the final prediction layer, so that the accuracy of small target detection isimproved; meanwhile, various basic weather conditions such as sunny days, cloudy days, rainy days and foggy days are summarized, and the image enhancement technology is used for increasing training data under different scenes, so that the generalization ability of the model is improved.