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Submarine engine vibration in deep sea will produce certain decibel noise which seriously affects combat effectiveness. Damping technology is the most effective way to control structural resonance and noise. It is the most important means to solve the problem of vibration and noise reduction. Polymer dampers can effectively reduce the noise level of naval vessels, absorb a large amount of passive energy, and make the noise greatly reduced. Polymer materials Damping structures are mainly divided into free damping layer and constrained damping layer. Free damping layer is to paste or spray the vibration absorbing material directly on the vibration absorbed parts. This kind of vibration absorption method requires that the damping value of the material is higher and wider, and the modulus value is also larger. Constrained damping layer is to clamp the vibration absorbing material between the metal sheet or composite material with a certain stiffness and the vibration absorbed parts, so as to improve its vibration absorption performance.