With the rapid development of radio technology and the rapid change of radio cheating means, the use of radio equipment in the examination of cheating has also increased. In order to ensure the fairness of the examination, how to find and locate the radio cheating signal effectively and construct the intelligent examination room has become a new hot topic that needs to be solved urgently. In view of this, on the basis of indoor location and spectrum monitoring technology, a discovery and location system of radio cheating signal based on deep learning is designed in this paper, which realizes the functions of judgment, location, alarm for the radio cheating signal, and real-time displaying on the mobile terminals. The system provides an intuitive, remote and real-time examination environment for invigilators, and creates a fair competition environment for the examinees.