Purpose/Significance To explore the boundary predicament and optimization path of primary health physicians’ personal information world, and to assist in the leap of primary health service capabilities. Method/Process Based on the theory of the personal information world, by combining literature analysis with empirical investigation, the information boundary dilemma of primary health physicians is analyzed from three dimensions of space, time and knowledge.Result/Conclusion The information boundary dilemma of primary health physicians is manifested in the narrow space boundary, the limited time boundary and the lack of knowledge boundary. It is necessary to strengthen the digital and intelligent construction of primary health care to expand the spatial boundaries, coordinate the timeliness of information activities of primary care physicians to extend the temporal boundaries, and enhance the digital and intelligent literacy of primary care physicians to improve their intellectual boundaries, so as to comprehensively improve the personal information world of primary care physicians.