A shoe pad, which is inserted between the bottom of a human foot and the inside of a shoe, has been researched and developed to give a sweet cushion to a walker. Even though there are a variety of commercial shoe pads nowadays, most of pads cannot meet a perfect satisfaction of consumers because pedestrian’s feet shapes and acting weights to the feet are different. Due to that reasons, walkers wearing the shoe pad are still suffering a foot pain and some pedestrians has a chronic disease like a plantar fasciitis. In order to resolve these problems, we propose the new model for representing human being’s feet by using an engineering link mechanism and analyze the force distributions of the shoe pads through at various conditions of walking, weight and shape of feet. Finally, a suitable shoe pad for plantar fasciitis patients and leisure sports are obtained.