The invention discloses a five-drive spherical robot using a mixed synchronous belt. The spherical robot comprises a spherical case and a track frame, wherein the spherical case is fixed on the outer surface of the track frame, and an annular rigid belt formed by the mixed synchronous belt is fixed in the track frame. Two ends of a center shaft are connected through a coupling center shaft motor and an electromagnetic clutch brake respectively and installed in an inner frame. A counter weight swing arm is connected with the center shaft and a counter weight box. Four pairs of T-shaped support arms are connected with a center outer frame and press wheel shafts, press wheels are sleeved on the press wheel shafts in a sliding mode and pressed on tracks of the track frame. Belt wheel shafts are installed in the middle of junctions of the T-shaped support arms, and synchronous belt wheels are mounted on the belt wheel shafts and meshed with the mixed synchronous belt. The four synchronous belt wheels move along the fixed rigid mixed synchronous belt to enable the counter weight position to change under the drive of circumferential motors and to enable the gravity center position of the spherical robot to change under the drive of a center shaft motor, and the spherical case is driven to roll along the ground. Motion control of the spherical robot is achieved through control of five motors.