The aim of our research is to build a model which can evaluate the amount of combustion products by using the chemical equilibrium method with a few chemical reactions. This paper presents a eddy dissipation concept/chemical equilibrium model (EDC/CE) and validates it by simulating CO-H_2 air turbulent diffusion flame. The obtained results were compared to the Correa's experimental data, Gran's computational data. An advantage of the EDC/CE model that any combustion products are obtained without using detailed chemical mechanisms. The results obtained by the EDC/CE model are in good agreement with these reference data. With the combustion model built in this paper, the combustion products can be calculated without detail chemical mechanisms, and the accuracy present model is in same order of the EDC model.