The invention provides a 
library data service expansion 
system and a method based on a 5G structure, wherein the 
system comprises three parts of a 
big data platform, a mobile edge calculation and a mobile user terminal. The 
big data platform part includes a hardware part and a 
software part, wherein the hardware part realizes the management node and storage node of 
big data platform, and the 
software part realizes data collection and storage, 
data processing, querying and pushing services. 
Mobile edge computing includes hadoop edge nodes, MEC 
wireless network information services, 
system authentication and 
access management. The mobile user terminal includes a 
user interface, a MEC mapping interface, service 
processing, and local data. The above three parts cooperate with each other to complete the collection, 
processing and user querying and pushing functions of Internet data. According to the system and the method, the corresponding 
edge node and terminal mapping are configured in the MEC, thereby improving the quality of the 
library data service, reducing the operation and maintenance cost, and also promotes the new application and popularization of the 5
G network.