The utility model discloses a submarine pipeline suspended span vortex induced vibration initiative monitoring system, vortex induced vibration monitoring devices are used for acquireing and transmitting the vortex induced vibration information of suspended span, the suspended span for vortex induced vibration, X axle acceleration data's frequency takes place when being 2 times of Y axle acceleration data frequency, vortex induced vibration monitoring devices passes through underwater sound channel transmission to vortex induced vibration surveillance center with the vortex induced vibration frequency, the receipt is used for receiving the acoustical signal and converting the signal of telecommunication into through underwater sound channel with display device, handles the signal of telecommunication, shows vortex induced vibration's frequency information. When the suspended span does not take place vortex induced vibration, do not carry out data transmission, vortex induced vibration surveillance center keeps mourning in silence. The utility model discloses changed the passive idea of monitoring of suspended span vortex induced vibration in the past, vortex induced vibration just carries out data transmission when taking place, has reduced the data transmission frequency, has reduced monitoring devices's energy consumption, has shortened true knowledge vortex induced vibration's time, has improved the efficiency of suspended span monitoring with improvement.