Abstract: In order to reduce the visual fatigue and reduce the error caused by the students’ observation of Newton Newton ring experimental process,the THDCE-20 camera image technique was used to redesign and refit the Newton ring experiment.Installed the THDCE-20 camera in the ordinary Newton ring experiment,and the program software is written through the integrated development environment of Qt.The camera is connected with the computer and the Newton ring is displayed on the computer screen.At the same time,the Newton ring on the screen has good symmetry and high accuracy in data measurement.The results show that the design is practical and accurate,and it is helpful for students to study the characteristics of Newton ring experiment.