A device for increasing the shale gas recovery ratio through energy gathering fracturing of a rotary oblique paraboloid comprises a priming device and a gas conveying device. The priming device comprises an energy gathering device, a priming circuit and an exploder. The energy gathering device comprises a right energy gathering cover for gathering explosive exploding energy and shooting the explosive exploding energy leftwards, and the right energy gathering cover is the right paraboloid with an outward opening. Compared with the prior art, due to the energy gathering function of the right energy gathering cover, shale in an explosive fracturing area is extruded in the spatial oblique direction, factures are fast communicated to form shale fracture zones, the specific area of the shale isincreased, and therefore the analysis rate and recovery ratio of shale gas are effectively increased.