The utility model discloses a high-voltage circuit breaker high precision control instrument comprising a master control unit, an IGBT driving module, an IGBT, an IGBT working power supply, a master control power supply interface, a man-machine interaction unit, a button interface and a program download interface. The master control power supply interface, a display unit, the button interface and the program download interface are all connected to the master control unit. The IGBT working power supply and the IGBT driving module are both connected to the IGBT. Compared with traditional high-voltage circuit breaker program control instruments, the control instrument emphasizes a principle of system heavy current and light current separation in system hardware design, and system hardware is divided in the master control unit and an IGBT driving circuit which are separately designed, so that the designed IGBT driving module can effectively realize an isolation protection effect on the master control unit even if working abnormity occurs to the IGBT working power supply or the IGBT is broken down.