The invention relates to a power transmission line audible noise and radio disturbance long-time measurement system and method. The power transmission line audible noise and radio disturbance long-time measurement system comprises a noise network analyzer, a radio antenna, a radio signal receiver connected with the radio antenna, a field control computer, a remote control computer and a plurality of noise probes. The signal output end of each noise probe is respectively connected with the signal input end of the noise network analyzer, the signal output end of the noise network analyzer is connected with the field control computer, the radio signal receiver is connected with the field control computer, and the field control computer is connected with the remote control computer through the network. The power transmission line audible noise and radio disturbance long-time measurement system and method can measure power transmission line audible noise and radio disturbance and environmental climate around a power transmission line continuously for a long time, and can ensure accuracy and reliability of measurement results.