Provided is an oscillating type transmission line dancing detection apparatus. The apparatus comprises a vibration sensor and a data collector connected with the vibration sensor. The data collector is also connected with a GSM module; the output end of the vibration sensor is connected with the input end of the data collector; and the output end of the data collector is connected with the input end of the GSM module. The oscillating type transmission line dancing detection apparatus further comprises an alarm server for receiving and processing the information sent by the GSM module. According to the utility model, the vibration sensor is utilized for detecting the dancing of a transmission line, the detection apparatus is easy and convenient, the principle is mature, and the operation reliability is high, so that large accidents such as large dancing, line breaking power failure and the like of the power transmission line can be discovered beforehand for performing processing on the line so as to avoid great loss.