Soft Rock Tunnel horizontal jet grouting method comprising: (1) horizontal jet grouting rig according to a predetermined hole location in the tunnel face soft rock construction zone drilled with a predetermined depth and diameter of the first type drilling the horizontal rotary jet rig includes a movable body mounted on the first carriage of the movable body and the ability to independently lift the front end, is attached to the rear end of the movable body and the second support can be independently raised and lowered frame, and a spray boom, wherein said spray boom supporting the support frame on top of the first and second top of the support frame, and the spray boom relative to the movable body move back and forth, the spray boom comprises drilling means high pressure jet grouting rig power, the drilling apparatus comprises a spray boom provided on the front end of the drill bit and drill bit attached to the rear end of the drill pipe. Anchoring drilling rig Anchoring drilling rig is mainly used in hydropower station, railway, highway slope in all kinds of geological disaster prevention and dangerous rock landslide body anchor engineering jet grouting rig, especially for high rock slope sealing curtain Jet anchor engineering drilling rig, but also for in urban deep excavation construction, anti-floating anchor and foundation grouting consolidation hole, blast hole blasting, high pressure spraying pile, tunnel Forepoling hole drilling rig and other Jet tracked chassis, will slightly change its power head , can be easily comprehensive construction. The main drilling methods: DTH conventional drilling, with drilling pipe, spiral drilling. Construction Practice in pore formation and the different kinds of complex drilling methods, punctured its excellent performance, the majority of the construction unit and peer recognition.