This research presents an empirical relationship between modulus of elasticity with compressive strength concrete that is prepeard from localized materials and containing several perecentages of natural pozzolan (0 ,10 ,15, 20)% , also for tow cement quantity (350 ,400 ) Kg/m3 and for tow ages(28 ,90 ) day .Then comparing the experimentally obtained result with the mechanical properties calculated using the recommend relationship from the various design codes. A new empirical relationship between elastic modulus, and compressive strength for concrete containing natural pozzolan is proposed.