The invention discloses a low-profile pedicle screw adopting a flexible connection way. The low-profile pedicle screw comprises a screw rod, wherein a cylinder is arranged at the top of the screw rod perpendicular to the screw rod, a groove is formed in the axial direction of the cylinder, fixed clamping grooves are symmetrically formed in the back surface of the groove of the cylinder along a center line of the screw rod, and limiting grooves are formed in the grove surfaces of the fixed clamping grooves; the pedicle screw is also provided with a self-locking device, and the self-locking device is in locking fit with the fixed clamping grooves; the limiting grooves are of gradually-deep structures, the longitudinal sections of the limiting grooves are wedge-shaped, and the self-locking device is in limiting fit with the limiting grooves. The low-profile pedicle screw has the benefits that the top of the screw rod adopts the form of a groove structure, the groove structure forms a sliding fit hole and is in sliding fit with an orthopaedic rod, and the whole device is in locking fit through the self-locking device; as the self-locking device adopts a flexible strapping tape, and the strapping tape has a very limited positive pressure on the orthopaedic rod, the orthopaedic rod can slide in the sliding fit hole of the screw so as to induce an abnormal spine to grow towards the normal direction, so that the restriction on the growth of the spine is avoided.