After a profound investigation into many undergraduates' study of Physical Optics, some teaching experiences of Engineering Optics A(2)(Wave Optics)in School of Optical-Electrical and Computer Engineering, University of Shanghai for Science & Technology, are summarized.Five ways to improve the teaching method are proposed as follows: First, increasing students' interest in learning; second, explaining the cause and effect of physical law; third, combining multi-media teaching with traditional board writing; fourth, integrating daily-life observations into classroom experiments and then strengthen the comprehension of physical conception and law; finally, consolidating knowledge by doing appropriate exercises.Satisfactory effects are obtained through their practical applications to developing students' innovation ability.