Sensitive element recognition protection system and method for Chinese legal contract

The invention discloses a sensitive element identification protection system and method for a Chinese legal contract, and mainly solves the problems of low sensitive element identification accuracy, low efficiency and privacy risk in the prior art. The scheme comprises the following steps: 1) preprocessing an input Chinese legal contract and forming a training set; 2) constructing a sensitive element recognition model based on a Transform structure by adopting a deep learning technology; 3) training the model by using training set data, determining sensitive elements in the current contract through manual screening, marking element positions and outputting the element positions; 4) inputting contract data to be detected into the trained sensitive information identification model, and obtaining and outputting a sensitive information identification result by using the model; and 5) carrying out encryption processing on sensitive elements output by the model through the constructed privacy protection module to r