FIELD : medicine.SUBSTANCE : invention relates to medical equipment. Device for phototherapy contains a source of yellow light, a fiber-optic cable and a sensor, while a 150 W halogen lamp with a glass light filter is installed as a source of yellow light in front of the entrance of the connecting head of the fiber-optic cable, and the sensor is made in the form of two glass plates placed one above the other with an offset of up to 5 mm and the formation of a gap between them up to 7 mcm, the sensor and the fiber-optic cable are mounted in opposite ends of the electrically insulating tube, and the distance between the radially emitting end of the fiber-optic cable and the sensor is 25–30 mm.EFFECT : invention provides “direct and reverse correlation” with the internal organs of a living organism at the supramolecular level.3 cl, 10 dwg