The high power Nd3+ : YAG laser is selected in the experiments owing to the light absorptivity of energetic materials and the light transmission in the optical fiber. Several kinds of energetic materials are ignited using laser energy. The ignition curve of energetic materials is successfully obtained. The factors which affect the laser ignition characteristics of energetic materials are analyzed, which include laser energy, pulse width, the grain size etc. The experimental results show: the laser ignition features of different energetic materials exists distinction. It is mainly caused by the thermal physical quality of individual energetic materials. This will provide references for the design of laser ignition systems.