Urban territorial space monitoring is an important component of the national spatial governance system. The results of urban territorial space monitoring undertake the significant mission of providing fundamental support for territorial space planning, key technical support for urban health check and assessment, and decision-making basis for the implementation of land use control.Based on empirical data from the quality inspection of national-level urban territorial space monitoring results in 2024, this study systematically analyzes the manifestation forms of typical quality issues and conducts cause analysis from multiple perspectives. It proposes actionable strategies for quality improvement from two aspects: optimization of technical implementation processes and innovation in data quality control methods. Experimental verification shows that these strategies not only improve the efficiency of quality inspections but also enhance the quality of data results, providing strong support for the quality assurance of urban territorial space monitoring results and ensuring that the monitoring results effectively support scientific decision-making and sustainable development in territorial space governance.