Floor Structure for Electric Vehicle

An embodiment floor structure for an electric vehicle includes a cross member connected to an upper portion of a floor panel of the electric vehicle along a vehicle width direction, wherein the floor panel is configured to be connected to a pair of side sills that are disposed on each side of the electric vehicle, respectively, and extend in a front-to-rear direction of the electric vehicle, and a seat mounting unit installed on the cross member, wherein the seat mounting unit comprises a lower mounting bracket connected to an upper portion of the cross member and an upper mounting bracket connected to an upper portion of the lower mounting bracket.