Abstract: Automatic flow measurement system is gradually being promoted and applied in Anhui province as an updated flow measurement. In order to meet the requirements of hydrological modernization, solve the problem of automatic flow monitoring, analysis the comparative measurement of automatic flow monitoring in Anhui Province, determining comparative measurement methods and application standards. Picking point velocity radar wave of Gaotan station and Vertical ADCP of Tianchang station to demonstrate practical results. Use the linear regression and segmented linear regression methods to bulid the relationship of automatic and manually measured flow rate.The accuracy evaluation results met the standard requirements and can be put into use. Summarize the application experience of automatic flow measurement systems, propose the idea and suggestion which has reference significance for the promotion of automatic flow measurement systems.