The utility model relates to a salvageable downhole energy-storage hydraulic pulse tool used for petroleum drilling. The salvageable downhole energy-storage hydraulic pulse tool comprises a salvage head, an energy storage device, a magnetic transmission mechanism, a planetary decelerating mechanism, a pulse modulation mechanism and the like. An internal magnetic transmission mechanism, an input shaft, a planetary gear system, an output shaft and the like are dipped in a sealing cavity filled with lubricating oil to guarantee the service life of the moving members. The whole tool is installed in a drill collar short section and is downwards connected with a drill; in a drilled well, when the mud reaches the tool via the drill string, the mud drives the tool to act, and the continuous jet flow is converted into pulse jet flow; the pulse jet flow is favorable for starting well bottom broken rock debris, so that the well bottom is purified in time to prevent the rock debris from being repeatedly broken so as to improve the service life and the mechanical drilling speed of the drill; the energy storage device adsorbs pressure fluctuation in the drill string and generates flow pulsation to the drill so as to further enhance rock cleaning effect. The salvageable downhole energy-storage hydraulic pulse tool has the advantages of long service life, large pulsation pressure, low frequency, good use effect and the like and can be salvaged, and can meet the well drilling requirements of deep wells, ultra deep wells and hard stratums.