The invention relates to a station entrance identity authentication method based on a two-dimensional code. The method particularly includes the following steps: S1) providing an electric operation and maintenance communication management and control system for collecting and storing identity information of operation and maintenance workers to generate identity identification information; S2) encrypting the identity identification information to generate a cipher text by a system; S3) converting the cipher text into a two-dimensional code image by the system and sending the two-dimensional code image to a mobile terminal of the operation and maintenance workers; S4) providing a two-dimensional code scanning device, so that when the operation and maintenance workers enter the station for maintenance and show the two-dimensional code image on the mobile terminal, the two-dimensional code scanning device scans the two-dimensional code and analyses the identity information of the workers, and sends the analyzed identity information to the system for identification; and S5) receiving the verification result from the system by the two-dimensional code scanning device. The method solves the problem of identity identification of the operation and maintenance workers through the two-dimensional code and data encryption technologies.