Inspection work on power transmission line is an important link in the safe production of electric power, inspection staff training has always been attention of the power industry researchers. In order to improve learners training effect, we put forward a new form of teaching to inspect transmission lines with combined with simulation training. This paper analyzes the transmission line inspection requirements and the corresponding functions of the simulation system and the corresponding, then introduces the system structure, the abstract simulation training process, finally give the system application examples. Application results show that the 3D simulation training system of the power transmission line inspection can effectively guarantee training effect on the transmission line inspection technology.