Abstract:［Purpose/significance］ The basic main path is single and difficult to show the discontinuous development of technology,multibranch components of technology,and multiknowledge flow integration of technologies［Method/process］This paper proposes combination approaches of multisource forward local search path,multisink reverse local search path and global combination path to boost the variety of main path［Result/conclusion］Compared with the basic main path analysis method,this approach has improved the path variety,the important node inclusion,and the time distribution width of nodesThe analysis of fullerene field confirmed the feasibility of the method.