The invention discloses an intelligent robot system used for oral implantology surgeries. The intelligent robot system used for oral implantology surgeries comprises a robot mechanical arm, an end effector, an implantology surgery apparatus, a surgery navigation system, a surgery planning system, a force feedback system, an implantology robot bone texture analysis expert diagnosis system, an implantology point trimming and real-time data acquisition system, a restoration body real-time design and rapid moulding making system, and a special dental chair matches the implantology robot. The invention also discloses a method and a device used for matching of a CT scanning space with a surgical space, and security policy of the intelligent robot system. The intelligent robot system is capable of overcoming difficulties such as small oral implantology space, lack of direct sight, and poor doctor technology, realizing accurate control on implantology apparatus path and position, avoiding damage of normal tissue in surgeries, and realizing accurate implantation of implants.