In order to study the deformation of the contact surface of metal thin plate at a certain temperature and working condition,the deformation experiment of nickel based alloy (GH3044) thin plate with specific punch impact at a certain temperature was carried out by using high temperature material deformation system.A three-dimensional speckle measurement system based on digital image correlation (DIC) method was used to track and measure the whole deformation process of the material in real time to obtain the full field displacement and strain of the specimen,and the deformation laws of the material at 120 ℃ were revealed.The results show that by using DIC method,the whole experimental process and data can be accurately captured in real time;in the deformation process,the total displacement is mainly contributed by z direction displacement,and the principal strain is mainly contributed by y direction strain;in the strain component,the relative movement in y direction is dominant;temperature has a great influence on the deformation of the specimen,the higher the temperature is,the greater the deformation is;the deformation of the area under seed point selection reaches 100% and the deformation area with large displacement is related to the contact area of the punch.