With the exploration and discovery of deep low-permeability reservoirs in China, fracturing operations in high-temperature and deep wells are more and more important. Conventional fracturing treatment has some difficulties, such as high bottomhole fracturing pressure, high pump pressure, and malfunction of packer resulting from high temperature, etc. This article presents hydra-jet fracturing, a unique, relatively new stimulation technology that could greatly decrease bottomhole fracturing pressure, and pack off fracture interval using hydrodynamic energy without any packers, implementing fixed directional multilayer fracturing with a one-trip fracturing string. These technical advantages of hydra-jet fracturing are conducive to deep wells fracturing.