To provide a plant equipment vibration measuring system capable of efficiently inspecting a plant after an earthquake and starting the plant early.

The measuring system includes vibration measurement devices 6, 6A, 6B, 6C, 6D installed directly or adjacently to the equipment in a plant, and having a vibration sensor part 6a and a transmitter 6c for transmitting vibration data measured by the vibration sensor part by radiowaves, a storage device 10 for collecting and storing the vibration data received by a receiver 6c which receives the vibration data from the vibration measurement devices directly or through radio data relay devices 4, 4a, 4b, a response tolerance evaluation device 11 for previously evaluating a response tolerance on respective equipment from the separately collected vibration data, a central system 5 including a comparison means A for comparing the collected vibration data and the response tolerance on the respective equipment, and a display device 14 for displaying comparison results.