A design support system for supporting a design of an electronic device having an input device through which an input is made by utilizing elasticity is provided. The system includes a simulation unit for executing structural simulation of an input device based on structural data of the electronic device including the input device. The support system can include a re-design determining unit for notifying a need for re-design to a designer based on reactive characteristic data of the input device output from the simulation unit. The support system can include an examining unit for examining the reactive characteristic data, and a selecting unit for selecting another input device to replace the current input device.