The invention provides thermal control paint and a preparation method thereof, belonging to the building material filed. The thermal control paint which is novel functional paint is manufactured by adding organic and inorganic composite phase-change materials in common paint or functional paint, wherein the organic and inorganic composite phase-change materials are obtained by compounding expanded perlite, attapulgite, zeolite or sepiolite and paraffin or octadecane. The thermal control paint not only has the prior functions and the effect of beautifying the environment, but also has the phase-change thermal control function, can automatically adjust the indoor temperature, and improve the indoor comfort degree; in addition, the thermal control paint is the environment-friendly paint which is energy-saving and pollution-free.