Abstract: Gravity generator is no pollution and use the rail gravity energy to start the gravity train wheels generator or the gravity disequilibrium wheel generator etc. to generate electricity or to transport etc. on the gravity rail or on the gravity highway. The rail gravity energy is the gravity rail or the gravity highway which can repeatedly and continually and foreverly producing and supplying the infinite rail gravity motive energy to the gravity train or gravity car or various gravity generators etc. to make them speed advance forever on the gravity rail or on the gravity highway. The gravity rail or the gravity highway which is many of the high low slopes rail or the high low slopes highway be arcly smoothly linked then become the high low slopes wave continual and extended gravity rail or gravity highway which can producing and supplying the infinite rail gravity energy always.