Abstract: A security inspection system and a security inspection method are disclosed. The system includes: at least one inspection sub-system configured to perform ray scanning on an object to be inspected; at least one on-site image processing computer communicatively connected to the at least one inspection sub-system, and configured to store and process a radiographic image in real time; and at least one remote image processing computer communicatively connected to the at least one on-site image processing computer via at least one of a public network and a dedicated network. The at least one remote image processing computer each is configured to log in one of the at least one on-site image processing computer through remote access to synchronize remote data on a screen of the on-site image processing computer to the remote image processing computer.