Abstract: With the continuous development of composite materials, their temperature resistance has gradually increased, so high-temperature compression deformation measurement and analysis have become a key focus and challenge. At present, the high-temperature compression deformation measurement still relies primarily on the strain gauge method. As the experimental temperature rises, the traditional contact deformation measurement method is no longer applicable. In order to investigate the compression deformation characteristics of composite materials at high temperatures, non-contact deformation measurement techniques have gradually become the primary approach. This study mainly employs digital image correlation (DIC) non-contact measurement technology to investigate the compression deformation characteristics of CCF800 carbon fiber composite materials at 150, 180 and 250 ℃. The experiment results show that as the temperature increases, the resistance of carbon fiber composite materials to compression deformation decreases. The compressive modulus and compressive strength of carbon fiber composite materials are negatively correlated with temperature, while the failure strain is positively correlated with temperature.