The invention discloses an oil path control system of control valve hydraulic servo-motor. The oil path control system comprises a power supply end, an oil supply end, a hydraulic servo-motor, quick-closing valves and an operation valve, and further comprises a control device and a hydraulic detection device used for detecting the hydraulic pressure of the oil supply end. The control device can control a connector, communicating with the oil supply end, on the operation valve to be closed after judging the fact that the power supply end has power the detection value of the hydraulic detectiondevice is smaller than a preset hydraulic pressure value. In the oil path control system, whether the power supply end has power or not is judged through the control device so that whether the quick-closing valves are required to be powered on can be judged. According to the fact that the detection value of the hydraulic detection device is smaller than the preset value, it can be quickly judged that the quick-closing valves are powered off, accordingly, it can be effectively judged that power of the power supply end is not transmitted to the quick-closing valves, and the fact that a wire is broken can be judged. When it is judged that the wire is broken, the connector, communicating with the oil supply end, on the operation valve is controlled to be closed in time, tripping of a steam turbine is effectively avoided, and thus, the problem that a steam turbine unit is tripped when the quick-closing valves are powered off abnormally can be effectively solved.