Abstract: Based on the characteristics and requirements of microsurgery,a microgripper system for microsurgical robot(MicroHand system) is developed.The advantages of the microgripper system are as follows:small size,light weight,strong gripping force,condensed structure,high reliability,exact instrument rotation and open-closed motion,and easy replacement of the instrument.Through a series of tests and animal experiments,we can draw a conclusion that the design of the microgripper system is capable of satisfying the requirements of microsurgery and is proved to be successful.