The utility model relates to an ice physical parameter measuring device. The utility model is mainly composed of a sliding seat component, a laser light source component, a photosensitive device component and a signal processing device, and the laser light source component, the photosensitive device component and the signal processing device are coaxially arranged at both sides of the sliding seat component; an elevating ice sample supporting seat slides on a sliding seat and contacts a measuring head of a displacement sensor; the laser light source component is composed of a semiconductor laser, a collimation object lens and a long focusing lens or a diaphragm; a polarizer and a polarization analyzer can be rotationally arranged at the front of the laser light source component and the photosensitive device component. The utility model measures the physical parameters of the ice sample by utilizing scanning light beams which encounter light intensity changes caused by optical rotation of fine particles, air bubbles and ice.