Introduction to the Inspection Department: Inspection: a local grassroots government agency. Since the Song Dynasty, all dynasties and dynasties have set up inspection departments at key places such as passes and ferries in states and counties, responsible for arresting thieves and interrogating traitors and traitors. The inspection department of the Inspection Department is a ninth-rank official and is under the jurisdiction of the county magistrate of the eighth-rank official. Its function is equivalent to the current town government and police station, and department-level cadres.