Abstract: Introducing simulation systems into physics laboratory teaching can overcome the limitations of
traditional experiments in terms of time，space，and equipment，improve experimental efficiency，help students
deepen their understanding of principles，and enhance the quality of teaching． This study addresses the
pedagogical requirements for understanding Fraunhofer diffraction and creates a MATLAB GUI-based
integrated simulation training software that incorporates phenomenon simulation，parameter manipulation，and
theoretical explanations．The curriculum focuses on diffraction theory and develops physical models for single-
slit，circular aperture，and rectangular aperture (diffraction grating)diffraction．Users can modify parameters
such as incoming wavelength，aperture size，and lens focal length in real time via an interactive interface while
presenting the curves of diffraction intensity distribution and multi-dimensional patterns． It facilitates
demonstrations of both monochromatic and white-light diffraction．The program provides still images and moving
graphics that clearly explain diffraction phenomena and how different factors affect them，helping students grasp
difficult physical ideas and encouraging their interest in science．
