The invention discloses a high-speed magnetic rotation type true three-axis jet rock breaking device. The high-speed magnetic rotation type true three-axis jet rock breaking device mainly consists ofa surrounding pressure kettle pressurizing system, a strong magnetic center pipe control system and a high-pressure pump; all measuring and control instruments can realize the remote control and recording functions. The high-speed magnetic rotation type true three-axis jet rock breaking device has the advantages that the ground stress along different X/Y horizontal directions and the hydrostatic fluid column pressure along Z direction can be simulated; the true three-axis surrounding pressure loading and the jet rock breaking can be organically combined together, and a center pipe can continuously rotate at high speed, so as to solve the problem of failure in true simulation of stress conditions of rocks at the bottom of a well and high-speed rotation conditions of screw rods, worms and other composite drilling tools under the well in the drilling process by the existing jet rock breaking experiment device; the rule of influence on the jet rock breaking efficiency by the ground stressalong the X/Y directions and the hydrostatic fluid column pressure in a well cylinder can be analyzed, so as to provide an indoor study method for the definition of change rule of threshold pressure of jet rock breaking for different physical rock cores under surrounding pressure conditions and the application of high-pressure spraying drilling technology.