By taking aim at the application of Single Gimbal Control Moment Gyroscope(SGCMG) to quick small satellites,a switch control algorithm was presented to control the maneuver of small satellite.The small satellite with rigid bodies was used as a model,and the switch control for toques of small satellite with SGCMG was adjusted to avoid saturation singularity.SGCMG was controlled by pseudo-inverse steer law with zero-motion.The simulations show that the small satellite is capable of large angle maneuver with rotation of 45° at 14 s and average rate of 3.2 °/s.It proves that this switch algorithm can meet requirement for quick small satellite.