The invention discloses a high-precision automatic workpiece clamping manipulator system. The system comprises an adjustable chuck, an extension arm, a support arm, a track wire groove, a rotary support column, an alarm lamp, a base and a control box; the adjustable chuck is fixed at the lower end of the right side of the extension arm through a bolt; the outer wall of the extension arm is mechanically connected with a guide rail in the support arm; the track wire groove is horizontally fixed at the upper end of the outer wall of the support arm; the rotary support column is mounted on the right side of the alarm lamp, and is movably connected with the top of the base; the control box is horizontally fixed on the inner wall of the base; and the adjustable chuck is electrically connected with elements in the control box through the chuck. An adjustable clamping arm adjusts the clamping force more precisely, so that an improved high-precision automatic workpiece clamping manipulator canfreely adjust the clamping force, the workpiece clamping safety can be preferably guaranteed, the clamping speed is high, the workpiece damage degree is lower, and the precision cannot be influenced.