btaining earthquake source information quickly and accurately soon after the occurrence of a large earthquake is very important. However, it is often challenging to simultaneously obtain the distribution characteristics of rupture space. In this paper, a multiple point source based W-phase inversion method was developed based on the traditional W-phase inversion technology. The new method can quickly determine the energy release characteristics and focal mechanism of a large earthquake rupture on the spatial scale. The effectiveness of the program was tested by taking the 2004 Sumatra M_W9.1 earthquake as an example. We set up 1, 2, 3, 4, 5, and 6 point sources to determine the energy release characteristics and focal mechanism of the earthquake. Results show that the change of focal mechanism from south to north is consistent with the striking change of the subduction surface, which is also highly consistent with the focal mechanisms of historical earthquakes near the point sources. Therefore, the multiple point source based W-phase inversion method can effectively result in spatial energy release characteristics of large earthquakes, thus providing scientific support for post earthquake emergency response and tsunami warning.