A monitoring system includes an image capturing module, a displaying module, a face recognition module, a memory module, and a searching module. The image capturing module is configured for capturing images and videos. The face recognition module is configured for recognizing a number of human faces in the captured videos, and generating a number of groups of profile information each associated with a recognized face when the image capturing module captures the video. The memory module is configured for storing the captured videos and the profile information. The searching module is configured for receiving a group of input profile information, and searching whether a group of profile information stored in the memory module matches the group of the input information. The displaying module is configured for displaying the group of captured images associated with the group of profile information matched the group of input profile information.