A gearshift mechanism comprising: a first pedal varying forward direction of rotative power output from a continuously variable transmission that transmits power of an engine; a second pedal varying reverse direction of rotative power output from the continuously variable transmission; and a gearshift shaft, to which fits a base end side of the second pedal that is located in a way that the second pedal can be operated in the same direction as the first pedal, being a rotating shaft of the first pedal whose base end side is fixed; characterized by further comprising: an intermediate link, which abuts against the base end side of the first pedal and rotates in a direction opposite to movement of the first pedal, being connected to the second pedal and rotating in the same direction as the second pedal; a link shaft, which is located parallel to the gearshift shaft, fits to the intermediate link; and a frame body pivotally supporting the gearshift shaft and the link shaft, wherein an end portion of the gearshift shaft is connected to a link mechanism that is connected to the continuously variable transmission, the second pedal and the intermediate link are relatively rotatable to the gearshift shaft and the link shaft respectively, when the first pedal is operated, the gearshift shaft rotates in the same direction as the first pedal and the forward direction of rotative power from the continuously variable transmission is varied, and when the second pedal is operated, the intermediate link rotates in the same direction as the second pedal, then the intermediate link pushes the base end side of the first pedal, then the first pedal rotates in a direction opposite to the second pedal along with the gearshift shaft, and then the reverse direction of rotative power from the continuously variable transmission is varied. a first pedal varying forward direction of rotative power output from a continuously variable transmission that transmits power of an engine; a second pedal varying reverse direction of rotative power output from the continuously variable transmission; and a gearshift shaft, to which fits a base end side of the second pedal that is located in a way that the second pedal can be operated in the same direction as the first pedal, being a rotating shaft of the first pedal whose base end side is fixed; characterized by further comprising: an intermediate link, which abuts against the base end side of the first pedal and rotates in a direction opposite to movement of the first pedal, being connected to the second pedal and rotating in the same direction as the second pedal; a link shaft, which is located parallel to the gearshift shaft, fits to the intermediate link; and a frame body pivotally supporting the gearshift shaft and the link shaft, wherein an end portion of the gearshift shaft is connected to a link mechanism that is connected to the continuously variable transmission, the second pedal and the intermediate link are relatively rotatable to the gearshift shaft and the link shaft respectively, when the first pedal is operated, the gearshift shaft rotates in the same direction as the first pedal and the forward direction of rotative power from the continuously variable transmission is varied, and when the second pedal is operated, the intermediate link rotates in the same direction as the second pedal, then the intermediate link pushes the base end side of the first pedal, then the first pedal rotates in a direction opposite to the second pedal along with the gearshift shaft, and then the reverse direction of rotative power from the continuously variable transmission is varied. an intermediate link, which abuts against the base end side of the first pedal and rotates in a direction opposite to movement of the first pedal, being connected to the second pedal and rotating in the same direction as the second pedal; a link shaft, which is located parallel to the gearshift shaft, fits to the intermediate link; and a frame body pivotally supporting the gearshift shaft and the link shaft, wherein an end portion of the gearshift shaft is connected to a link mechanism that is connected to the continuously variable transmission, the second pedal and the intermediate link are relatively rotatable to the gearshift shaft and the link shaft respectively, when the first pedal is operated, the gearshift shaft rotates in the same direction as the first pedal and the forward direction of rotative power from the continuously variable transmission is varied, and when the second pedal is operated, the intermediate link rotates in the same direction as the second pedal, then the intermediate link pushes the base end side of the first pedal, then the first pedal rotates in a direction opposite to the second pedal along with the gearshift shaft, and then the reverse direction of rotative power from the continuously variable transmission is varied.