To conserve natural ecosystem and coexist with nature, a new type hydraulic turbine, named "Gyro Type Hydraulic Turbine", has been proposed by the authors. The turbine is suitable for shallow streams with high velocity in mountain torrents and/or rivers, and the rotor works and the fundamental characteristics have been discussed. Continuously, in this report, the effects of the stream velocity and the rotor profile on the performances are discussed with the experimental results.