The invention provides a bamboo carbon fiber cushion core with an infrared function and a preparation method thereof. The bamboo carbon fiber cushion core includes a first bamboo skin grid cloth layer, a bamboo chip grid cloth layer, a far infrared functional layer, a composite fiber felt layer and a second bamboo skin grid cloth layer, and the first bamboo skin grid cloth layer, the bamboo chip grid cloth layer, the far infrared functional layer, the composite fiber felt layer and the second bamboo skin grid cloth layer are successively arranged from top to bottom; the first bamboo skin gridcloth layer the second bamboo skin grid cloth layer include a plurality of pieces of bamboo skin grid cloths correspondingly, and the bamboo chip grid cloth layer includes a plurality of pieces of bamboo chip grid cloths; and the far infrared functional layer is obtained by successive series connection of a power supply, an alternating current/direct current converter, a temperature controller, atime controller, a thermistor, and bamboo fibers and a carbon fiber composite felt layer. According to the bamboo carbon fiber cushion core, the characteristics of softness and comfortableness, earthquake resistance, thermal resistance, moisture preservation and the like, far infrared rays produced by carbon fibers of the bamboo carbon fiber cushion core has the health care effects of circulatorysystem improvement, autonomic nerve adjustment, immune function improvement, antiphlogosis and the like.