The utility model provides a marine LNG exhaust gas temperature cable concentrator of diesel dual -fuel engine. Relate to marine diesel fuel engine energy transformation technique. Solve the unable problem of guaranteeing operating parameter and control signal stability and accuracy of present marine LNG exhaust gas temperature cable concentrator of diesel dual -fuel engine. The utility model discloses a two circuit boards, collection board, epitheca die sinking piece and inferior valve die sinking pieces all are located inside the casing, epitheca die sinking piece is fixed on inferior valve die sinking piece to form the enclosure space, no. Two the circuit board is fixed inside epitheca die sinking piece and inferior valve die sinking piece, circuit board passes through the wire and no. Two circuit boards link to each other, the collection board passes through the wire and no. Two circuit boards link to each other, the public head of a N serial ports links to each other with the collection board through many wires and a circuit board respectively, the lateral wall outside at the casing is all fixed to the public head of a N serial ports. Stability and the accuracy of beneficial effect for having guaranteed signal transmission, and simple manufacture, convenient to use. Do you be applicable to marine LNG the diesel dual -fuel engine.