The invention provides a three-dimensional portrait comprehensive recognition system, which includes an industrial personal computer, an identity card reader module, a two-dimensional facial image acquisition module, a three-dimensional image recognition module, a metal item detection module, a mobile terminal information acquisition module, an alarm module, a center end database, and a rear end comprehensive control platform. The identity card reader module, the two-dimensional facial image acquisition module, the three-dimensional image recognition module, the metal item detection module, the mobile terminal information acquisition module and the alarm module are connected with the industrial personal computer separately. According to the invention, the speed and accuracy of recognition are improved by the use of three-dimensional facial image recognition and comparison technology, and meanwhile, the data storage and analysis can be performed through the background to conduct alarm processing for key roles.