The invention provides a blocking position linear arrangement type self-driving automobile automatic gear shifting control mechanism, the arc motion trajectory of a blocking handle is decomposed intostraight motion in the direction of the blocking handle and horizontal straight motion in the front and back shift directions, a linear module assembly converts the rotation of a servo motor into thehorizontal movement of a nut through a lead screw, at the same time, a motor torque is converted into the horizontal force of a bolt type cam follower needle roller bearing on a sliding groove of theright side of a blocking handle supporting block, the bolt type cam follower needle roller bearing moves in a straight line in the horizontal direction with the nut, the sliding groove of the right side of the blocking handle supporting block reciprocates relative to the bolt type cam follower needle roller bearing, so that the shift action is completed; the mechanism fits closely with the blocking handle, and can simulate the shift action highly; the use of the bolt type cam follower needle roller bearing improves the bearing capacity of the complete set of structure, and the friction loss islowered simultaneously; and a height adjustment supporting frame can be adjusted according to the cab space to adapt to most of cabs, and the cabs do not need to be modified.