As a large and comprehensive scientific research facility, storage ring light sourceswhich constrain, accumulate, store electrons and force electrons to give out radiationhave now become one of the most monumental tools in chemocatalysis, bioscience,material science, condensed matter physics, et al. To make the radiated light brighterand get a clearer view, the stored beam current needs to be improved. However, this islimited by various beam collective effects. This presentation gives short introductionon the collective effects.