Abstract: A real-time surveillance system of the present invention comprises a plurality of machine surveillance controllers for surveying a specific production line, the operation real time data of the production lines are collected and are transmitted via a communication interface to a server for showing on a surveillance display, so that a remote manager can effectively manage the operation state of production lines in order to achieve the purposes of reducing labor and manufacturing costs, upgrading production efficiency and improving product quality. The machine surveillance controllers are serially connected to simplify the communication cable connection in the production lines in order to facilitate the maintenance of production facility.