The invention belongs to the technical field of oil field gas production, and provides a deblocking mechanism of a large-diameter slip type throttler. The deblocking mechanism of the large-diameter slip type throttler comprises a throttler body, a slip ring, hooping pins, slip hoops, slips, three locking blocks, deblocking pins, a taper base and a baffle ring. The slip ring is arranged on the outer wall of the upper end of the throttler body in a sleeving mode and is evenly provided with three grooves in the radial direction. Three slip grooves are evenly formed in the middle of the throttler body in the radial direction. The slips are fixed into the slip grooves in the throttler body through the slip hoops. The upper ends of the slips are fixed to the grooves in the slip ring. The slip hoops are fixed to the throttler body through the hooping pins. The taper base is fixed to the outer wall of the throttler body through the deblocking pins. Three clamping grooves are evenly formed in the taper base in the radial direction. The three locking blocks are arranged in the three slip grooves in the taper base and are tightly attached to the inner surfaces of the lower ends of the slips. The lower end of the throttler body is connected with the baffle ring. By the adoption of the deblocking mechanism of the large-diameter slip type throttler, the problems that a large-diameter slip type throttler slides down during salvaging and is difficult to deblock are solved, and the salvaging success rate is improved.