It focuses on the common problems in current experimental teaching of Newton Ｒing，such as students’lack of theoretical understanding，neglect of formula correction and sloppy error analysis．Heuristic teaching process is discussed to closely link the experimental operation with formula derivation．Students could find errors in the measurement process by themselves．Under the guidance of a teacher，a comprehensive data handling is conducted to obtain a revised scheme for error correction．This clear teaching process is based on the doubt and correction of experimental data，so that students’ participation is greatly improved．The significance of successive differential method and normalization processing could be deeply understood，while the comprehension of error factors measurement correction and data processing is greatly deepened．