The utility model relates to the field of blowers, and especially relates to a device for preventing an inlet pipeline of a gas blower from vibrating. The device is characterized in that a balance pipeline is disposes beside the blower; one end of the balance pipeline is communicated with the inlet pipeline behind an inlet valve of the blower through a parallel pipe 1, and the other end of the balance pipeline is communicated with the outlet pipeline of the blower through a parallel pipe 2; and each parallel pipe is provided with a balance valve. The parallel pipe 1 and the parallel pipe 2 are respectively provided with a liquid discharge tube and a liquid discharge valve. Compared with the prior art, the utility model has the beneficial effects that the structure is simple and effective, the device solves a problem of the vibration of an inlet gas pipeline at moments of reaching the critical speed of rotation and closing the inlet valve of the blower when the gas blower is started, the device reduces the damage caused by vibration to equipment, and the device guarantees the safe and reliable operation of production.