The embodiment of the invention discloses a vibrator simultaneous excitation method, device and system. The method comprises steps: according to a preset frequency division number, target scanning signals are subjected to frequency division, and sub scanning signals are acquired; the sub scanning signals are reordered according to a preset rule and are serially connected to form multiple excitation scanning signals, wherein the multiple excitation scanning signals are uncorrelated in a frequency domain; a preset number of excitation scanning signals are selected to be given with a preset number of different vibrators respectively; and the different vibrators with the preset number are subjected to simultaneous seismic wave excitation according to the excitation scanning signals of each vibrator. By using each embodiment of the invention, while the high fidelity of the acquired seismic data is ensured, the seismic data acquisition efficiency is further improved.