Aiming to the defects and potential safety hazard of traditional entrance guard system , this paper designs an entrance guard management system based on the technology of face recognition. The embedded development platform choses S3C2440B as microprocessors, WInCE6.0 as an operating system. At the same time, the system transplants OpenCV, invokes the AdaBoost and functions of PCA algorithm, in order to complete face image detection and face recognition. Finally, the recognition result will acts on the door lock switch control. Compared to the traditional entrance guard management system, the design is safer and more automatic, which brings easier and more convenient experience to users.