Purpose/Significance To formulate the top-level design of smart first aid platform suitable for the development of pre-hospital medical emergency system in Beijing, so as to provide references for pre-hospital emergency information construction. Method/Process The research group visits the pre-hospital emergency center, sub center, emergency station and in-hospital emergency department. Through interviews, the research group deeply understands the current situation of emergency informatization in Beijing, analyzes user needs, and constructs the top-level design of intelligent pre-hospital medical emergency information platform. Result/Conclusion The top-level design includes the overall architecture, data architecture and support platform. The system function planning is proposed based on the seven major emergency functions, such as dispatching command, medical service, emergency support, decision-making management, public service, etc., providing solid information support for the high-quality development of the pre-hospital medical emergency system.