PROBLEM TO BE SOLVED: To provide a polyaxial pedicle screw that can lock the orientation of a shank separately.SOLUTION: The polyaxial pedicle screw includes: a receiving head having a U-shaped transversal passage; the shank 3 having a threaded portion 30 located outside the receiving head and a bulging end 31 rotatably housed in the receiving head; a locking insert 4 housed in the receiving head to be engaged with the bulging end 31 for locking the bulging end 31 in a fixed position; and a set screw 5 engaged with a distant opening 21 for locking a connecting rod 200 received in the U-shaped transversal passage. The receiving head of the polyaxial screw has at least one lateral opening 42, and the lateral opening 42 exposes a contact surface 41 so that an external pressing means acts on the contact surface 41 of the locking insert 4 in order to maintain the locking insert 4 at the fixed position.