A new-type floating breakwater structure which consists of perforated circular arc, rectangle box and anchor-chain system is proposed based on the advantages of perforated circular arc structure and rectangle structure applications in the breakwater engineering. The relationship between hydrodynamic characteristic such as wave attenuation performance, movement and anchor-chain stress, etc., and relative width (W/L), relative draft (s/d), and other factors of the floating breaker was tested and researched by means of a regular wave physical model in a 2D wave flume, and then compared with the traditional box-type floating breakwater. The result indicates that the new-type floating breakwater has the hydrodynamic characteristics of good effect of wave-damping, small range of motion as well as small stress of anchor chain in the range of test.