Due to the relatively high power consumption of thin client computers based on current domestic processors, the commonly used passive heat dispersion method with the fanfree thermal conductivity is slightly inadequate in the aspect of heat dispersion performance of the whole machine, having the dead zone of heat dispersion in particular. We design a thin client computer based on quadcore FT processor. The thin client computer has a double thermal module, 4 inlet ducts and 2 exhaust ducts, so that there is no heat dead zone inside of the client computer, and it can achieve a good heat dispersion performance of the whole machine. Temperature test data show that, when the computer runs under full load condition in the environment of 25℃the temperature of each test point in the body is within 52℃ , which meets the working temperature requirements of all components. Besides, the outer surface temperature of the machine is lower than 36℃, which brings favorable user experience.