The utility model relates to a far infrared mattress capable of automatically controlling temperature. The utility model comprises a bracket body and a soft mattress layer, wherein, an electrothermal layer, an insulating layer, a reflecting layer, a heat insulating layer, a heat conducting layer, and a stone plate layer are arranged between the bracket body and the soft mattress layer; the work state of the electrothermal layer is controlled by a temperature controller. The temperature of the mattress can be automatically set and controlled. Because the stone plate layer is made of jade or marble which use calcium carbonate as main components, and the jade or the marble can radiate far infrared rays after heated. The utility model which acts on a human body through the far infrared rays has the better effect of prevention and therapy for a cerebrovascular disease, diabetes mellitus, hyperlipaemia, rheumatism, and arthritis, and simultaneously, the utility model can improve the metabolism function of the human body.