The utility model relates to a low superhigh pressure electric fuel injector that leaks, including establishing pressure spring, the high -speed solenoid valve subassembly in the injector lower part, needle valve assembly, orifice plate with the interior surfaces to mate of tight cap to compress tightly in injector's lower terminal surface, in the upper portion recess of orifice plate is placed in to the cooperation of the upper portion of high -speed solenoid valve subassembly and injector's lower tip, lower part, the lower extreme of high -speed solenoid valve subassembly be equipped with with the orifice plate in the oil pump capacity pore pair should / the complex steel ball. Its simple structure can reduce processing, the assembly of spare part and debug the cost, and the compactness is arranged to spare part, simultaneously, can obviously improve sealed effect and jetting performance, thereby avoid because the control sleeve slope causes the fuel leakage in the high -pressure volume chamber to influence jetting performance to the control chamber in, can reduce plane sealing needs the surface area of precision finishing, reduces the sealed face processing degree of difficulty for the sprayer can adapt to higher spraying pressure.