Spatial power combining is one of the key technologies for the development of high-power radio frequency （RF） equipment. Navigation jamming equipment confronts problems such as excessive volume， low power， and narrow bandwidth. Hence， this study summarizes the current status of research on power combining technologies and makes an in-depth analysis of the main spatial power combining technologies. On this basis， it briefly compares the advantages and disadvantages of various digital beamforming techniques in spatial power combining. Moreover， given the development status of navigation jamming， it analyzes the technical bottlenecks in the application of spatial power combining technologies in navigation jamming. This paper also summarizes the problems to be solved in terms of the power capacity of devices， electromagnetic compatibility requirements， and operating bandwidth of signals and puts forward the development direction of high-power RF navigation jamming stations.