The invention discloses a novel hydraulic driving vertical spiral deep ploughing machine which comprises a shell, a vertical spiral deep ploughing drill bit and a fixing component, wherein the fixingcomponent is mounted inside the lower end of the shell; the vertical spiral deep ploughing drill bit is mounted at the lower end of the fixing component. The novel hydraulic driving vertical spiral deep ploughing machine is scientific and reasonable in structure and safe and convenient to use; due to adoption of the vertical spiral deep ploughing drill bit, and under the vertical cutting actions of a hydraulic driving motor and a spiral soil loosening piece and an alloy cutter on the outer side of the hydraulic driving motor, a bottom ploughing layer can be conveniently broken, the quality ofa ploughing soil layer can be improved, and the fertility and the water reservation and drought resistance of soil can be improved; meanwhile, under the action of the alloy cutter, grass in the soil can be conveniently cut off, and the grass can be prevented from being wound on the upper end of the device to affect ploughing operation of the device; under the action of a sealing groove, a shielding shell and a sealing strip of the fixing component, seams at connecting parts can be shielded and sealed, and the consequence that normal rotation of a power shaft is affected if soil impurities arefed into the connecting parts when the device is used, can be avoided.