Rice (Oryza sativa L.) as model plant and one of the most important crop, is the hot point in the genomic research. With the completion of rice genome sequencing work, how to use the genetic information obtained by whole-genome sequencing and analysis of gene function in rice are the main problem need to be solved. This book featured as elaboration of photosynthetic characterizations of yellow coloration mutant, rolling leaf mutant, and early senescent mutants. The relationship between photosynthesis progress and mutants were summaried.