A foldable pedal, comprising: a connection member comprising a first connection end and a second connection end arranged in opposite to the first connection end along a first axis; a shaft comprising a first end and a second end arranged in opposite to the first end, the first end being pivotally connected with the second connection end along a second axis which is perpendicular to the first axis, so that the shaft pivots with respect to the connection member; a pedal body comprising a shaft bore for receiving the second end of the shaft, the shaft being rotatable with respect to the shaft bore; an engagement device disposed on the connection member and switchable between an engagement position and a release position; when the engagement device is at the engagement position, the engagement device is engaged with the first end of the shaft, such that the shaft is arranged in coaxial alignment with the first axis; when the engagement device is at the release position, the pedal body is foldable with respect to a crank, wherein the first axis crosses the second axis at a pivot point; the engagement device and the pivot point are arranged on an outer side of the pedal body, and the engagement device is between the first connection end and the pivot point; at the release position, the pedal body is folded about the pivot point with respect to the crank, characterized in that: a pivot axle is included, the first end of the shaft comprises a slide groove disposed along an axial direction, and the pivot axle passes through between the slide groove and the second connection end along the second axis; at the engagement position, the pivot axle is at a first position of the slide groove, and the slide groove is parallel to the first axis; at the release position, the pivot axle is at a second position of the slide groove, and the slide groove is perpendicular to the first axis and the second axis; the second connection end comprises a combination bore on the first axis toward the first connection end; at the engagement position, the first end of the shaft is inserted in the combination bore; at the release position, the first end of the shaft is allowed to leave the combination bore. a connection member comprising a first connection end and a second connection end arranged in opposite to the first connection end along a first axis; a shaft comprising a first end and a second end arranged in opposite to the first end, the first end being pivotally connected with the second connection end along a second axis which is perpendicular to the first axis, so that the shaft pivots with respect to the connection member; a pedal body comprising a shaft bore for receiving the second end of the shaft, the shaft being rotatable with respect to the shaft bore; an engagement device disposed on the connection member and switchable between an engagement position and a release position; when the engagement device is at the engagement position, the engagement device is engaged with the first end of the shaft, such that the shaft is arranged in coaxial alignment with the first axis; when the engagement device is at the release position, the pedal body is foldable with respect to a crank, wherein the first axis crosses the second axis at a pivot point; the engagement device and the pivot point are arranged on an outer side of the pedal body, and the engagement device is between the first connection end and the pivot point; at the release position, the pedal body is folded about the pivot point with respect to the crank,