A wheelchair comprising: a wheelchair bottom portion constituted by coupling a first bottom, a fifth bottom, a second bottom, a third bottom, and a fourth bottom; a first link configured to support the first bottom; a second link configured to support the second bottom; a third link configured to support the third bottom; a fourth link configured to support the fourth bottom; a first base portion configured to support the fifth bottom; a first drive link configured to interlock and move the second link and the third link; and a first coupling link configured to couple the first link and the first drive link, and move the first drive link interlocking with movement of the first link, wherein the first drive link has a first end that is disposed with a first roller slidable with respect to the second link, and has a second end that is disposed with a second roller slidable with respect to the third link, and wherein the first bottom is a bottom on a back side of the wheelchair, the second bottom is a bottom on a thigh side of the wheelchair, the third bottom is a bottom on a calf side of the wheelchair, the fourth bottom is a bottom on a foot side of the wheelchair, and the fifth bottom is a bottom on a hip side of the wheelchair, the first link is a link on the back side of the wheelchair, the second link is a link on the thigh side of the wheelchair, and the third link is a link on the calf side of the wheelchair, the first roller is a sliding roller disposed on the thigh side of the wheelchair, and the second roller is a sliding roller disposed on the calf side of the wheelchair, and the second link and the third link are pivotally connected. a wheelchair bottom portion constituted by coupling a first bottom, a fifth bottom, a second bottom, a third bottom, and a fourth bottom; a first link configured to support the first bottom; a second link configured to support the second bottom; a third link configured to support the third bottom; a fourth link configured to support the fourth bottom; a first base portion configured to support the fifth bottom; a first drive link configured to interlock and move the second link and the third link; and a first coupling link configured to couple the first link and the first drive link, and move the first drive link interlocking with movement of the first link, wherein the first drive link has a first end that is disposed with a first roller slidable with respect to the second link, and has a second end that is disposed with a second roller slidable with respect to the third link, and wherein the first bottom is a bottom on a back side of the wheelchair, the second bottom is a bottom on a thigh side of the wheelchair, the third bottom is a bottom on a calf side of the wheelchair, the fourth bottom is a bottom on a foot side of the wheelchair, and the fifth bottom is a bottom on a hip side of the wheelchair, the first link is a link on the back side of the wheelchair, the second link is a link on the thigh side of the wheelchair, and the third link is a link on the calf side of the wheelchair, the first roller is a sliding roller disposed on the thigh side of the wheelchair, and the second roller is a sliding roller disposed on the calf side of the wheelchair, and the second link and the third link are pivotally connected.