The invention relates to a fuel jet device for a jet engine. The fuel jet device is installed on a jet valve installation hole base of the engine and is at least provided with a jet valve, a sleeved part is arranged between the jet valve installation hole base and the jet valve and is provided with a sleeve part and a shielding ring, the sleeve part sleeves the jet valve which extends into the jet valve installation hole base, and the shielding ring shields the upper end of the jet valve installation hole base; because the sleeve part is arranged on the outer periphery of the solenoid valve section of the jet valve and is provided with the punched sleeve body and the shielding ring arranged on the outer periphery of the sleeve body, after the jet valve is inserted into the jet valve installation hole base and is located, the sleeve body of the sleeve part fills in the gap formed between the solenoid valve section and the jet valve installation hole base, the shielding ring covers the upper end of the jet valve installation hole base, the noise generated in the operation process of a solenoid valve is isolated by the sleeve part, the upper end of the jet valve installation hole base is covered by the shielding ring, external dirt is prevented from entering the jet valve installation hole base and leaking into the engine, and the use effect of the fuel jet device is improved.