This paper discusses the dynamic change of rock infrared radiation temperature field in the experiment on rock mechanical properties. With the aid of AGA782 Thermalvision it was observed that the rock surface infrared radiation temperature rised with the increase of the stress on the rock sample

and the temperature rising 2-4 degrees centigrade was measured from where the rock broke. Moreover

the whole process of the rock infrared radiation temperature field variation caused by the change of the stress was obtained. That is

with the augment of the stress exerted on the rock sample

the rock surface radiation temperature tended to rise during the elastic deformation stage and decrease during the ductile deformation stage. This is a very valuable physical phenomenon. The observation results derived from the thermal images provide the theoretical basis for the ground stress monitoring by infrared remote sensing technique.