Downhole directional hydraulic jetting tool ground control method

The invention discloses a downhole directional hydraulic jetting tool ground control method. The downhole directional hydraulic jetting tool ground control method comprises that a, when reaching a jetting well depth position, the downhole directional jetting tool is started by means of ground control; b, after the downhole directional jetting tool is started, the circumferential orientation of a jet hole along the borehole is identified, after it is determined that the jet hole is in the downhole initial circumferential orientation, contrastive analysis is carried out on the initial circumferential orientation and a set final jetting orientation, and the direction and angle by which a spray gun needs to rotate are obtained; c, the spray gun is controlled to rotate by the needed direction and angle, the circumferential orientation of the jet hole along the borehole is adjusted to the appointed orientation; and d, after the jet hole in the pray gun is adjusted in place, directional jetted particle perforation i