The utility model relates to a parent fish type movable propeller turbine which comprises a runner chamber, a runner hub arranged in the runner chamber, blades connected with the circumference of the runner hub, and a guide blade connected with the top of the runner chamber, wherein the runner hub comprises an upper cylindrical section, a spherical section, a lower cylindrical section and two frustum sections that are arranged sequentially; an internal wall of the runner chamber sequentially comprises a cylindrical section at the upper part, a spherical section at the middle part, and a throat pipe section at the lower part; the parent fish type movable propeller turbine is characterized in that the spherical section of the runner hub consists of a plurality of convex eccentric spherical crowns; the quantity of the eccentric spherical crowns is the same as that of the blades; each blade is fixedly connected with the corresponding eccentric spherical crown of the runner hub; the diameter of the cylindrical section of the runner chamber is 0.98 times that of the spherical section; the diameter of the throat pipe section of the runner chamber is 0.96 times that of the spherical section; the radius of the outer circular arc of the throat pipe section is 0.02D1-0.1D1; D1 refers to the diameter of the runner chamber; and the spherical section of the runner chamber is fully spherical. The movable propeller turbine can be widely applied to hydroelectric generation devices.