Because of various reasons there are a lot of different sizes bubbles in the ocean.The acoustic characteristics in bubble water are different in pure water.Because the bubble in water has strong scattering effects and shielding effects,therefore,it is important to study the acoustic characteristics of underwater bubbles since it has important scientific significance and application prospects.In the thesis,the sound scattering on a single bubble will be presented firstly,then we introduce multi-body multi-di...