Abstract:The application of chlorophyll fluorescence technique played a more and more important role in the study of responses of plants,including algae,to various environmental stresses over the last 10 years.The minireview discribed the works and development in this field,including the characteristics for fluorescence,the changes in induced fluorescence involving a complex physiological content under various stresses, especially light stress and events in vivo and mechanism among the dissipation of excessive excitation in photosynthetic apparatus. The problems and perspective in basic and applied environmental researches were discussed.