The existing construction land approval system lacks consideration of the linkage effect of all levels of departments. Under the background of the administrative power reform of the policy of "delegating control and service", this paper takes Guangdong Province as an example to design a system after being entrusted or authorized with the power of construction land approval (review) at the provincial, municipal and county levels. It uses information technology to establish a system operation model with unified process, unified data and unified rules, complete unified supervision of land approval business, achieve unified technical operation and maintenance services in the province, and further promote the in-depth application of information construction in the construction land approval business, and improve the efficiency of business approval.