1. A control system for communication robot for supporting input of interactive actions to be performed by a communication robot, comprising: a first storage storing in advance information on a plurality of behaviors associated with a plurality of behavior programs including a spontaneous behavior program for performing a spontaneous behavior and a reflex behavior program prepared with inclusion of determination of a precondition and for performing a reflex behavior in response to behavior of a person when the precondition is satisfied; a displayer displaying on a display a list of said plurality of behaviors in a user-selectable manner based on said information stored in said first storage; a detector detecting a user's operation to an input device to select a behavior to be performed by said communication robot from said list of behaviors displayed by said displayer; a behavior decider deciding the behavior to be performed by said communication robot on the basis of a detection result by said detector; a second storage storing the behavior decided by said behavior decider as input history information; an accumulator accumulating a plurality of input history information stored by said second storage; and a generator generating reproductive motion information for interactive actions to be performed by said communication robot on the basis of the plurality of input history information accumulated by said accumulator.