Xueliang project is an important component of the national three-dimensional prevention and control system. It is a "mass public security prevention and control project" with the county, township and village level comprehensive management center as the command platform, the comprehensive management information as the support, the grid management as the basis, and the public security video monitoring networking application as the focus. The construction of high-definition cameras at the main road intersections and crowd gathering places in the countryside is an information service project based on fixed video monitoring, mobile video collection, video networking, and linkage alarm system, with the county, township and village level monitoring platforms as the main body. The construction of Xueliang project provides an important guarantee for the safety protection of towns, villages and other areas