Faba bean  (Vicia  faba  L.)  is the main source  of plant proteinsin Egypt. Thiscrop is attacked by numerous of pests as mites , Aphids  ,white fly and leaf hoppers.  Unfortunately these pests contribute to transmit viral diseases . The experiment was carried out Sakha   Agricultural Research Station , Kafr El-Sheikh Governorate and conducted in 2013/2014 season to determine theage distribution patterns of pests and  predators as a method  for  predicting the reproductive capabilities and  probability  of the continuation of  arthropods species in the future .In addition  tothe relationships between  phenols  leaf  contentand occurrence of arthropods was studied. Populations of sucking pests and their natural enemies on leaflets of different cultivars of  faba bean; Giza 716, Sakha 3 and Giza 40 were recorded. Theage distribution patterns of the above mentioned arthropods were represented by three patterns are expanding population, decline population and stationary population. Decline age distribution was found for phytophagous mite; Tetranychus  urticae  Koch  on   Giza 716 cultivar which means that  the mite population is decreasing .   The population of  age distribution of  Aphis  Giza 716 spp. stages  appeared as expanding population on the  three  faba bean  cultivars.  The population of  age distribution of   Empoasca   sp.  was    expanding on   Giza 716 and Giza 40 cultivars  of  faba bean ,but it declining on Sakha 3 cultivar. However the  three age  patterns were found  for Chrysoperla   carnea Steph., expanding for Aphidoletes aphidimyza (Rond.). Data revealed that the correlation between total phenols in faba bean leaflets were significantly positive only in Sakha 3  cultivar .