The present utility model relates to the power transmission line on-line monitoring technology field, concretely to an intelligent power transmission line tower vibration monitoring system. The system comprises a background detection subsystem composed of a monitoring server module and a wireless communication gateway module, and a data acquisition terminal subsystem composed of a sensor module, a microprocessor module, a power supply module and a wireless communication module. By adopting the system, amplitude and frequency of a tower and rod members under the wind load effect can be timely grasped, and the health state of the tower can be diagnosed.