The invention discloses a coring drilling tool based on hydraulic clamping coring. The coring drilling tool comprises a force transferring power distribution mechanism, a guide limiting mechanism, a pressure storage mechanism, a lifting pressure injection mechanism, a hydraulic core clamping mechanism, a side spraying drill bit power distribution mechanism, an outer tube assembly and a sealing system, wherein the guide limiting mechanism is butted with the force transferring power distribution mechanism; the pressure storage mechanism is butted with the guide limiting mechanism; the lifting pressure injection mechanism is butted with the pressure storage mechanism; the hydraulic core clamping mechanism is butted with the lifting pressure injection mechanism; the side spraying drill bit power distribution mechanism is butted with the hydraulic core clamping mechanism; the hydraulic core clamping mechanism comprises a bottom bearing platform, a hydraulic membrane, a core inner tube, a clamp spring seat and a clamp spring. The coring drilling tool can reach 100 percent coring rate in soft, loose and broken complex stratums where coring is difficult, provides fully automatic three-dimensional stress to clamp, bind and control cores based on hydraulic pressure, meanwhile is matched with a conventional core clamping and cutting device, and has the characteristics of high reliability, high coring efficiency, high coring quality, high core recovery percentage, wide applicable stratum range and good automation property.