Two field experiments were carried out at the experimental station of the Faculty of Agriculture, Suez CanalUniversity, Ismailia, Egypt during the winter seasons of 2009-2010 and 2010-2011.The study aimed to investigate the effect ofmaturity stage on the nutritional quality and determination of the best maturity stage of snow peassuitable for harvesting. The obtained results showed that the best maturity stage is at 20 days after flowering. Fresh weight, length and width of pods were increased and then decreased. Dry matter and crude fiber were increased while chlorophyll and vitamin C were decreased during pod development. Sugar content and SSC were increased and then decreased with maturation of pod. The highest content valuewere recorded at the 8^th day then decreased until the 28^th day, after these times, total phenolic content and increased until the 52^nd day.