The device for biostimulation and therapy consists of an LED source (1) placed in the focus of a paraboloid reflector (2), behind which a cooling fan (3) is mounted. A polarizer (5) is placed at the Brewster angle in the path of the luminous flux (4) emitted by the LED source (1), and a plane-parallel plate (6) is mounted at the point where the polarized luminous flux exits. The power supply and the control of the device's operation are carried out by an electronic unit (7). It consists of a microprocessor (71), one input of which is connected to a power supply unit (72), and the other input - to a keyboard (73). One output of the microprocessor (71) is connected to the input of a display (74), and the other output - to a control unit (75) for the LED source (1). A USB port (76) is also provided for connecting external control (a personal computer) and optionally for power supply. The keyboard (73), the display (74), and the USB port (76) are mounted on the outer side of a casing (8).