A system and a method for editing and controlling actions of a mobile robot allowing for the creation and modification of behaviors and of motions both according to an event logic and according to a time logic, the latter controlling the event logic and thus allowing for the synchronization of the behaviors and motions of different robot subassemblies. The system is organized in behavior and motion layers including action sequences and a timeline. The actions can be programmed in boxes interconnected by signals which convey information. The boxes are organized in a hierarchical structure, the lowest level of which comprises a script that can be interpreted by a virtual robot which simulates the execution of the commands and, where appropriate, by a physical robot. The motions of the robot can also be controlled graphically by motion screens.