According to the survey data, most of the blind people encounter accidents when they go out alone, and in order to build a good atmosphere for the construction of a barrier-free environment, the state has issued relevant laws and regulations to help the visually impaired participate in and integrate into social life equally, fully and conveniently. In this context, this project researches and designs smart guide glasses based on CV and 5G and sound coding mapping technology, providing safer and more considerate services for the blind and helping the visually impaired to “see” the wonderful world. Because the blind can not get the environmental information, so the use of cameras to obtain environmental information, we mainly use the low latency, large bandwidth and slicing technology of 5G to provide exclusive network guarantee for the guide glasses, to create an intelligent visual assistance system, the use of CV (computer vision) to detect and identify the basic travel environment such as blind roads and zebra crossings, when the glasses obtain environmental data, special three-dimensional stereoscopic voice coding will be carried out, and different visual information (such as the type of obstacles, Directions and distances, etc.) are mapped one by one with different sounds or different rhythms to convey sound information to the blind.