Abstract: Taking false call as an example, the quality control technique in the management of nondestructive testing field was introduced. Firstly the flowchart was used to find the session causing false call, analysis showed that the session was defect positioning or quantitative errors. Then two plans and a chart (effect-cause map, list map and check chart) were used to analyze the reasons causing defect positioning or quantitative errors. At last the strategy table was designed to prevent false judgment. Using quality control technique could improve the nondestructive testing quality continuously.