Abstract: There are many kinds of wave energy generating devices, and different types of devices have their own advantages. In order to comprehensively compare the performance of different devices and provide ideas for further in-depth study, this paper makes a comparative analysis of the existing various wave energy devices from several different angles, such as the efficiency, reliability, and the influence on the environment. Then, based on the principle of analytic hierarchy process, a comprehensive evaluation model of multi index is constructed, and a comprehensive analysis is carried out on several devices by using this model. The results show that the tilting and float type wave energy power generation devices have better comprehensive performance and wide application range.