The invention relates to a reactor applicable to a high-viscosity quick reaction system and belongs to the technical field of reactors. The reactor overall is composed of one supergravity reactor, one screw reactor and one stirring kettle. A liquid distributor is arranged at a central position of filler of the supergravity reactor, a screw rod is arranged at the underneath coaxial with a filler rotor, a feed delivery pipe is arranged outside the screw rod, the screw rod is driven by the same motor along with the filler rotor, the screw rod and the filler rotor rotate synchronously, and the stirring kettle is connected below the feed delivery pipe. The supergravity reactor and the screw rod reactor are in combined use, efficient mixing characteristic of the supergravity reactor is utilized, residence time of materials in the reactor is short, conversion rate of the materials does not always meet production requirements, the screw reactor prolongs the residence time of the materials in the reactor, on the basis of an existing tubular reactor, the screw rod designed in a pipe can strongly deliver and mix the materials in the feed delivery pipe, and mass transfer effect and material liquidity in the feed delivery pipe are improved.