Abstract: An autonomous-driving hydraulic steering modification control system disclosed by this application includes a steering wheel, a hydraulic steering mechanism and a turning wheel, the hydraulic steering mechanism is connected with the steering wheel and the turning wheel respectively, the steering wheel is connected with the hydraulic steering mechanism through a first rotating shaft and a second rotating shaft, one end of the first rotating shaft is connected with the steering wheel, the other end of the first rotating shaft is connected with one end of the second rotating shaft through a steering connector, the other end of the second rotating shaft is connected with the hydraulic steering mechanism, and a steering motor is arranged on the second rotating shaft and is configured to drive the hydraulic steering mechanism to rotate so as to make the turning wheel rotate.