In a walking assistance device for providing a walking assistance force to a femoral part of a user, the walking assistance force generated by a power generator is effectively transmitted to the femoral part of the user while avoiding the user from experiencing any undue pressure or discomfort. The walking assistance device includes a rigid femoral support frame having a base end connected to an output end of an electric motor unit and a free end extending from the base end to a position opposite to a front part of the femoral part of the user, and a flexible belt attached to the free end of the femoral support frame to be releasably worn around a circumference of the femoral part of the user at a height corresponding to the free end of the femoral support frame.