A clutch type driving mechanism (10, 10a) suitable for use in a hybrid powered vehicle, comprising: a motor comprising a motor shaft for outputting a rotary kinetic energy; an axle housing mounted on said motor shaft, said axle housing comprising a male thread extending around an outer perimeter thereof and a drive end face opposite to said motor; a sliding sleeve comprising an axle housing accommodation chamber an axle bearing accommodation chamber respectively defined in two opposing ends thereof, said axle housing accommodation chamber comprising a female thread matching said male thread of said axle housing for enabling said sliding sleeve to be mounted in said axle housing, a rack radially inwardly extended from an inside wall thereof between said axle housing accommodation chamber and said axle bearing accommodation chamber, and an annular stepped surface defined between said rack and said axle housing accommodation chamber; an axle bearing mounted in said axle bearing accommodation chamber of said sliding sleeve, said axle bearing comprising an inner race and an outer race; an input shaft comprising a shaft body rotatably and slidably supported in said axle bearing, an end flange radially outwardly extended from one end of said shaft body and an input gear located at an opposite end of said shaft body, said end flange defining a driven end face and a bearing face, said driven end face and said bearing face being respectively kept apart from said drive end face of said axle housing and said annular stepped surface of said sliding sleeve when said motor stands still; and an output shaft comprising an output gear meshed with said input gear for transferring a rotational motion to the opponent to cause said output shaft and said input shaft to rotate synchronously. a motor comprising a motor shaft for outputting a rotary kinetic energy; an axle housing mounted on said motor shaft, said axle housing comprising a male thread extending around an outer perimeter thereof and a drive end face opposite to said motor; a sliding sleeve comprising an axle housing accommodation chamber an axle bearing accommodation chamber respectively defined in two opposing ends thereof, said axle housing accommodation chamber comprising a female thread matching said male thread of said axle housing for enabling said sliding sleeve to be mounted in said axle housing, a rack radially inwardly extended from an inside wall thereof between said axle housing accommodation chamber and said axle bearing accommodation chamber, and an annular stepped surface defined between said rack and said axle housing accommodation chamber; an axle bearing mounted in said axle bearing accommodation chamber of said sliding sleeve, said axle bearing comprising an inner race and an outer race; an input shaft comprising a shaft body rotatably and slidably supported in said axle bearing, an end flange radially outwardly extended from one end of said shaft body and an input gear located at an opposite end of said shaft body, said end flange defining a driven end face and a bearing face, said driven end face and said bearing face being respectively kept apart from said drive end face of said axle housing and said annular stepped surface of said sliding sleeve when said motor stands still; and an output shaft comprising an output gear meshed with said input gear for transferring a rotational motion to the opponent to cause said output shaft and said input shaft to rotate synchronously.