Abstract: The explosive growth of mobile network traffic, brings great pressure to the intelligent traffic and mobile network. In order to cope with this challenge, the deployment of computing and cache resources in mobile network edge, and providing the nearby network and business services for users became the focus in academia and industry. This article introduced the background, principle and progress of the Mobile network edge computing and caching technology, discussed the key technologies, challenges and future directions of the technology. It is important to study how to use the technology to improve the efficiency of content distribution, improve the user experience