The invention discloses a continuous jet device for fuel. The continuous jet device comprises an air pump, a fuel pump, a mixed flow-distributing device and a jet valve. The jet valve is installed on the mixed flow-distributing device, the fuel pump is connected with the mixed flow-distributing device through a fuel pipe and pumps fuel into the mixed flow-distributing device from a fuel tank so as to finish distribution of the fuel, the air pump is connected with the mixed flow-distributing device through an air conveying pipe, and the mixed flow-distributing device is connected with intake manifolds of every cylinder of an engine through every jet pipe positioned on the mixed flow-distributing device. The continuous jet device has the advantages that the fuel is not completely conveyed to a gas pipe center, oil gas combination gas can be distributed for every cylinder independently, the fuel is jetted to specific air flow, and the jetted fuel quantity is also measured accurately.