A safety belt retractor pre-winding and baffle installation device is provided, including a rotary table, which is provided with a loading station, a winding station, a stop slot positioning station, a baffle installation station, a NG discharging station, and a qualified product discharging station. The rotation shaft of the safety belt retractor is installed on the profiling fixture. After winding to the set number of turns through the winding mechanism, the position of the stop slot is found through the position detection mechanism, and finally the baffle is successfully installed by the multi-axis manipulator. The disclosure also uses the visual sensor to identify the type, control the number of turns of the servo motor in the pre-winding step, and check whether the torque fed back by the servo motor is within the set range, it can realize the processing of products with multiple specifications.