Device for improving stability of submarine pipeline and inhibiting vortex-induced vibration

The invention relates to a device for improving the stability of a submarine pipeline and inhibiting vortex-induced vibration, which is arranged on the submarine pipeline (1) and comprises a submarine pipeline auxiliary stability augmentation device main body (1), a submarine pipeline protection cushion block (7) and a zigzag base (8), and a transverse opening (1) for accommodating the submarine pipeline (1) is transversely formed in the submarine pipeline auxiliary stability augmentation device main body (1); the submarine pipeline auxiliary stability augmentation device main body (1) is divided into two side parts and a middle part, the two side parts fully surround the two sides and the upper part of the submarine pipeline (1) arranged in the two side parts, and the middle part is lower than the submarine pipeline (1), so that the upper part of the submarine pipeline (1) is exposed; the three parts of the submarine pipeline auxiliary stability augmentation device main body (1) are surface streamlines (1);