Method and system for identifying risk behavior

The invention discloses a method and system for identifying a risk behavior, and the method comprises the steps: selecting an acceleration signal of a target object in a continuous time period when the target object carries out a target behavior, and obtaining an acceleration feature vector of the acceleration signal in the continuous time period through a deep neural network model; selecting a depth image of the target object at the ending moment of the target behavior, and obtaining a target object feature vector of the target object in the depth image through a deep neural network model; selecting a two-dimensional image of the target object at the ending moment of the target behavior, and obtaining background element features of the target object in the two-dimensional image through a deep neural network model; inputting the acceleration feature vector and the target object feature vector into the neural network discrimination model to obtain a behavior action of the target object; and based on the backgr