With the continuous development of information technology and network technology, the number and types of on-board interconnection interfaces are increasing, which brings performance improvement and security risks, and brings challenges to the safety of civil aircraft. The interface types of the internal network and external network of the new generation of civil aircraft were summarized. The policies of ICAO, the Federal Aviation Administration of the United States, the European Aviation Safety Agency for the network security were given. This paper analyses the verification requirements of civil aircraft airborne system network, and gives the verification elements and requirements in the actual verification. This study can provide theoretical support for the airworthiness certification of civil aircraft airborne system network in China.