Targeted research to know the cost structure for 14 poultry field work in the province of Baghdad and to identify economies of scale for the production of chicken meat in those working the fields during the year 2014, with the highest percentage of variable costs are for feed, which amounted increase of 67.3% followed by the cost of the purchase of chicks, which amounted to 13.2% of the total costs, followed by medicine and health supervision. The fixed-cost items were the highest percentage of rental halls, which amounted to 2.9% of the total costs. As it has been the total cost estimate and function of which was derived average total cost function to calculate the optimum size investigator economic efficiency in the minimization of costs. As well as the derivation of marginal cost of college costs for a function to calculate the size of the holy profit it is found that the optimal production volume 80, 769 kg Year-1, either the size of the holy production for profit 123 846 kg Year-1, and it is the optimum capacity for civilian costs 76, 192 bird chicken. Year-1 and amplitude binoculars for-profit 115 650 bird chicken Years-1.