Energy saving has become a hot issue all over the world. Also, the demand for thermal comfort in office building is increasing rapidly. Asan energy saving strategy, the integrated control system composed of air-conditioning system, lighting system and blind system was evaluated interms of energy saving and thermal comfort. The results show that the residents could be kept comfortable as well as it reduced about 40.8% ofthe cooling energy and 19.6 %of the lighting energy. The total energy, during measurement, saving rate reached 29.7%.