Foldable rotary non-track bicycle with telescopic height adjusting

The utility model relates to a new type non-guideway telescopic height adjustable rotated folding bicycle, a frame connecting rod is connected with a chain wheel and a back wheel through a first connecting rod and a second connecting rod respectively; and the chain wheel is fixed on the back wheel through a third connecting rod, so the telescoping process is easy and labor saved and does not change the parts state after regulation so as not to affect the normal use of the parts. Through various folding manners, the utility model can fold the bicycle to a minimum volume state to save space. Meanwhile, the moveable connection manner of the first, second and third connecting rods can reduce the vibration and the stopper can limit the moving scope of every connecting rod.