The study of thermoinduced changes of optical properties of adipose tissue is very actual problem. We made the optical model of thermo-sensitive heterophase medium (adipose tissue). Here the elementary adipose cell will consist of a cube which basic volume will contain a adipose ball, everything else- water. The adipose ball will contain liquid and crystal phases. Has been created the experimental scheme for research of angular distribution of the light passed through the adipose tissue sample. The same model has been created in program Tracepro - General Raytracing. It is presented the good coordination of calculated and experimental curves for temperatures 5, 26 and 40 °C. We have made a calculated curve of dependence of intensity transmitted through the multyphase medium (adipose tissue) from a ratio of volume of liquid phase to total volume. Experimentally knowing also, that intensity of transmitted light depends on temperature, we have made the dependence of a ratio of volume of a liquid phase to total volume of a cell from temperature. Also we have put the experiment. We have keep the sample of adipose tissue at temperature 20, 30 and 39 °C in drying box. And we have received a ratio of hard and liquid phases in the sample. Thus the dependence of observed in experiment intensity on temperature can be caused by dependence of a ratio of volume of liquid and hard phases in the medium on temperature.© (2007) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.