The utility model provides a throttling device for a lubricating oil passage of an automobile engine cylinder head, and belongs to the technical field of automobile fittings. The throttling device solves the problem of the lubricating oil supply caused by the insufficient pressure during the operation of the automobile engine. The throttling device for the lubricating oil passage of the automobile engine cylinder head is arranged at a greasy blockage mounting hole of the cylinder head, and the greasy blockage mounting hole is arranged between a side oil canal and a camshaft oil canal. The throttling device is characterized in that the throttling device is a throttling bolt internally provided with a throttling oil canal, and the diameter of the oil canal is smaller than the diameters of the side oil canal and the camshaft oil canal. By arranging the throttling bolt with the throttling canal at the greasy blockage mounting hole of the cylinder head, the engine oil pressure of the engine at a low speed can be maintained, and the technical problem that the too slow response caused by too low pressure is avoided, at the same time sufficient lubricating supply is provided for the whole engine system, and the stability of the whole engine system is ensured.