A robot control system includes: a selector configured to perform a selection of a task object from among a plurality of workpieces by using a first vision sensor; and an operation control section configured to control a robot to perform a task on the task object by using a tool. The selection and the task are executed simultaneously and in parallel, the selector transmits the information of the selected task object to the operation control section before the task, and the operation control section controls the robot based on the transmitted information of the task object.