Abstract: The blocking mass, frame style structure and elasticity separated devices are imported to the plate and shell supports. Schematic designs of vibration attenuation are conducted and simulation model of both modified and primary support structures are constructed, then the vibration transmission characteristics from the plate and shell support structures to the hull is analyzed and the attenuation of every measure also calculated by means of numerical simulation when vibration excitation of bump is bear on upon the model. Numerical results show that the attenuation of blocking mass, frame style structure and elasticity separated devices can achieve 3 d B, 10 d B and 40 d B, respectively. Considering reasonable engineering characteristic parameter and mass ratio, blocking mass has the highest adaptability but little vibration attenuation, elasticity separated devices has notable attenuation but difficulty to apply in plate and shell support structure, and the frame style structure gives consideration to the both factors, having considerable applied prospect.