In neurosurgery, surgeons have to perform minute and precise manipulation with poor visibility due to blood or cerebrospinal fluid, and it is particularly difficult to operate in the deep surgical field. To overcome these difficulties, the authors have developed a robotic system to support micro-neurosurgery. Based on the evaluation, sophistication of the system is implemented. To ensure the sterilization of the forceps, and to respond to many kind of surgical tools, the authors have developed robotic forceps which are composed of the three components. The connection of these components can be performed with simple operation. And not to prevent visual system, the diameter of the forceps is reduced to 2.5[mm].