The utility model discloses an improvement structure of electromagnetism elder generation top guide, including disk seat and pilot unit, pilot unit includes the sleeve pipe, moves the iron core, quiet iron core and excitation coil, quiet iron core along the axial be equipped with with the exhaust passage of valve pocket intercommunication, the bottom top -down of quiet iron core extends in proper order and is equipped with first toper bellying and second toper bellying, the exhaust passage has a perfect understanding first toper bellying and second toper bellying in proper order, the tapering of first toper bellying is lighter than the tapering of second toper bellying, the top top -down that moves the iron core be equipped with in proper order with the first toper slot part of first toper bellying looks adaptation, with the second toper slot part of second toper bellying looks adaptation, the tank bottom of second toper slot part is equipped with the last chock plug that corresponds the setting with the exhaust passage. The utility model has the advantages of simple and reasonable structure, effectively improved the electromagnetic induction value, reduced starting power for higher, the energy -conserving effect of action sensitivity is better.