The invention discloses an intelligent railway vehicle axle health state monitoring method and monitoring system based on wide area network (WAN) and local area network (LAN) to achieve timely monitoring of the railway vehicle axle health states through combination of the WAN and the LAN. When at a place with WAN signal coverage, signal transmission and monitoring of the railway vehicle axle health states are carried out through the WAN; and when at a place without WAN signal coverage, local signal transmission and monitoring of the railway vehicle axle health states are carried out through the LAN, signal data storage is implemented, and when WAN signal coverage exists, the monitoring signal data stored by the LAN is uploaded to a monitoring center, the monitoring center further analyzes and processes the data, and barrier-free timely monitoring of the railway vehicle axle health states is achieved.