The present study contains results of some experiments that had been carried out to study the advantage of olive mill waste water (OMW) use ability and in sugar's factories wastes in Syria as fungi cultures to produce stall-feed rich in proteins. The results showed that Geotrichum rich in proteins had been grown and geminated more rapidly and revealed that inorganic nitrogen additions (nitrates or ammonia) to the culture have advanced the fungi growth which is rich in proteins, the highest quantity of proteins was (8.6 g/l) in NH4NO3 (1.5%) media and urea (2.0%) media whereas the fungi biomass was higher with NH4NO3 (1.5%) than with urea (2.0%).