Abstract: The present invention relates to a series of “Force-enhancing Powerful Magnetic Energy Engine wit High speed” for converting magnetic energy into mechanical energy characterized in that it has many sets of “permanent magnets” stored with a plenty of magnetic energy, and is capable of carrying out repeatedly unlike pole mutual attration and like-pole repalleance to prduce and output powerful attractive force and repellent force. And through the force-enhancing and speed-increasing device, the engine can attain and maintain “Energy Conservation” for a corresponding long time. Every time the energy stored in the system is almost exhausted, new energy will be introduced subsequently from the outside, causing the engine to be able to continuously rotate and to do work externally. The engine consumes no oil, no electricity, no gas and no coal; noise free and no pollution with high rotational speed.