Abstract: A knee panel for a front seat of a vehicle, located under an instrument panel for protecting a driver and a passenger riding on the front seat, and a knee panel mounting structure which minimizes the deformation and displacement of the knee panel and its supporting member, when the driver's and/or passenger's knees make contact with the inner surface of the knee panel, by bearing the impact force on a front pillar side through a side bracket and on a floor side thereof through an L-shaped bracket, thereby directing the impact force as a load toward both the ends of the L-shaped bracket.