Aim\ Studying temperature field during select laser sintering and analyzing sintering width and depth under certain selected sintering parameters. Methods\ The sintering process and interrelation between thermal properties are analyzed. The adaptable finite element model is established. The code is programmed and used to simulate the temperature field. The result of simulation is used to define the depth and width of sintering. The computed results are verified with experimental temperature measurement. Results\ The difference between the results of simulation and the measurement is rather little. Conclusion\ The sintering technological parameters can be selected with this numerical simulation method.