The invention relates to the technical field of the mobile terminal data monitoring device and application method thereof, specifically a mobile terminal data sending monitoring device and an application method thereof. The mobile terminal data sending monitoring device comprises a monitoring service module, a cloud server, a mobile data collector and a communication mobile terminal. According to the mobile terminal data sending monitoring device and the application method thereof of the invention, the data collected by the mobile data collector are monitored by making combined use of the monitoring service module, the cloud server and the communication mobile terminal; specific data are marked through monitoring; data sharing is realized by the cloud server; the specific data are isolated through the cloud server; the data contents are monitored by the cloud server and related personnel; the specific data are stored in the cloud server and the monitoring service module as databases so that the specific data are conveniently used for monitoring data next time; the monitoring effect of the mobile communication data is improved, and the related personnel can immediately process related events according to the monitoring data.