A foot massage assembly for a vehicle, may simultaneously provide a foot massage and a heating function and may include a plate mounted on a seatback for a vehicle, a bladder unit spaced from the plate at an interval and provided with a plurality of bladder cells, wherein air is supplied to or exhausted from an inside of the bladder cells for pressurizing passenger's soles, and a heat wire mat positioned to cover the bladder unit and provided with a heat wire.