In this paper, the smart thermostat woven high-count fabric was researched, including the choice of fibers, special spinning technology, weaving technology, and finishing technology. The properties of the smart thermostat fabric were as follows. Average melting temperature was 23.2 °C, average melting endothermic was 12.6 J/g, average freezing temperature is 19.81 °C, and average solidification heat was 12.35 J/g. These mean that the fabric researched has the adaptive thermostat function. And the tested results also show that the fabric researched has reached the top level of the same kinds of fabric.