Abstract:The land space planning system is an important foundation and key link for the modernization of land space governance system. It plays an important role in strategic guidance and rigid control in the land space development and protection system. The county level land space master plan is the working basis for cities to implement new development concepts and high performance space governance, and promote high quality development and high quality life. Accompanying with current delimitation of "three zones and three lines", the compilation of territorial spatial planning has entered a critical period. After two rounds of trial planning, problems and contradictions have been fully exposed. In this paper, taking Longkou city as an example, inadequate connection between land use planning and urban planning, excessive total construction scale in the preparation of overall, land and space planning have been analyzed. It is concluded that county-level cities should combine their resource endowments with regional advantages, give play to their comparative advantages, carry out planning preparation according to local conditions, highlight regional and cultural characteristics, and prepare more scientific and reasonable planning to ensure that the planning can be used effectively and easily.