Multifunctional seat for high-speed train

The invention relates to a multifunctional seat for a high-speed train. The seat is composed of a housing, a backrest, a seat cushion, leg supports, armrests, a transmission mechanism and a control unit, the backrest is rotatably connected with the seat cushion, the seat cushion is rotatably connected with leg supports, the backrest, the seat cushion and leg supports are connected with the transmission mechanism, lifting or translation actions are driven by the transmission mechanism, the transmission mechanism is controlled by the control unit, and the backrest, the seat cushion, leg supports, armrests, the transmission mechanism and the control unit are arranged inside the housing. According to the seat, the transmission mechanism is arranged, functions of lying and sitting are implemented, a passenger can lie or sit according to demands and can control the inclination angle of the backrest at random, the comfort of the seat is improved, and the operation is simple and convenient.