To meet the power security needs of highway toll stations，an intelligent dual power switching system has been designed to ensure that critical equipment receives stable and uninterrupted power supply under all circumstances. This system innovatively integrates an uninterruptible power supply (UPS) with the mains power supply，creating a redundant architecture with mutual backup capabilities; The inclusion of 4G wireless communication modules enables remote real-time monitoring of the dual power supply status. Practical applications have demonstrated that the system can effectively handle various power outages，ensuring the continuous operation of toll station equipment. It not only enhances the reliability and response speed of the power supply system but also significantly reduces the need for manual intervention and lowers operating costs. This research achievement provides a reliable technical solution for the power guarantee of the highway toll system，which has certain practical value and promotion significance.