In the electro-optic field, many devices require the temperature stabilization. Uncooled infrared focal plane (UIFP) which does not need the cooling system has a good prospect. In order to ensure the temperature stabilization of each sensitive element on the focal plane, a high performance and accuracy temperature control system is designed. The theory of thermo-electric cooler (TEC) using Seebeck effect is introduced, and the design of temperature control circuit based on ADN8830 is discussed. The experimental results show that the temperature control system fully meets the requirements of the temperature stabilization of each sensitive element on the focal plane.