Field experiments were carried out at Qaha, Qalyubiya Governorate, throughout 2017-2018 and 2018-2019 seasons to study population fluctuations of Aphis craccivora (Koch) and  Aphis fabae Scopoli infesting broad bean plantations, and two associated predators addition, effects of certain weather factors (daily mean temperatures and daily mean R.H.). A. craccivora had   two peaks both seasons (1^st week of December and 3^rd week of January) and (1^st week of December and 1^st week of January) in the 1^st and 2^nd seasons respectively. A. faba showed three peaks in 1^st season (2^nd week of December, last week of December and 1^st week of March). while 2 peaks in the second season (1^st week of December. and end of December.)
           Population fluctuations of A. craccivora and A. faba and associated predators were higher in the 1^st season than the second season and C. undcimpunctata was dominant than C. carneaea.
            A simple correlation between A. craccivora and C. undcimpunctata showed a significant positive correlation in both seasons while with C. carneaea was insignificant negative in the 1^st season and positive in the 2^nd season, and the relationship between A. fabae was negative in both seasons with the two predators. The relationship between A. craccivora and daily mean temperature show negative insignificant relation during the 1^st season while was significant in the 2^nd season. Also, the simple correlation with   A. fabe was insignificant negative in both seasons .as well as A. craccivora and A. fabe showed the insignificant positive value in both seasons with relative humidity.