The invention discloses a preparation method for a graphene dye with a far infrared function. The preparation method comprises the following steps: taking a certain amount of graphene, coupling reagent and dispersing agent, pouring into a container at a certain ratio and mixing; stirring for 30-40min with a stirring rod; adding distilled water for regulating pH value of solution to 6-7 and then sealing and standing by; taking a certain amount of activated carbon powder and putting into a dryer under the temperature set at 200-250 DEG C. Solid grains of organic pigments are prevented from settling and agglomerating; a drug required by a stable suspension is formed; the settling and agglomerating of graphene are avoided and the uniformity of graphene is promoted; far infrared ceramic powderis capable of radiating a special ceramic material with a specific wavelength far infrared ray and is capable of accelerating the dissolution rate of activated carbon powder; the far infrared ceramicmicro-powder is added, so that a certain far infrared function is achieved, the mixing of graphene dye and far infrared ceramic micro-powder is accelerated and the purpose is achieved.