NOVELTY - The machine has a saddle vertical rod (14) wound around a saddle vertical rod folded clamped shaft (15) to be leveled to a beam (16) of a body-building vehicle. A running machine driving roller shaft bearing (21) is connected with a running machine power gear (22) via a running machine transmission chain (8), and an electric charge integrated machine (6) is connected with a charge power gear (11) via a charge transmission chain (7). A body-building speed-changed combined gear (10) is connected with a body-building vehicle pedal driving gear (13) via a body-building vehicle chain (9).    USE - Energy-saving interesting running machine and body-building vehicle combined machine for use during exercise.    ADVANTAGE - The device uses the energy generated while stepping the body-building vehicle to directly drive the running machine to work through a mechanical transmission mechanism and drives the electric charge integrated machine to charge a rechargeable battery through the mechanical transmission mechanism, so that the rechargeable battery can independently drive the running machine or drive the running machine and body-building vehicle to supply the running machine with hybrid power, thus avoiding energy wastage, and preventing the user from feeling alone. The running machine and the body-building vehicle can be folded, so that the machine occupies small area and provides multiple functions.    DESCRIPTION OF DRAWING(S) - The drawing shows a side view of an energy-saving interesting running machine and body-building vehicle combined machine.    Electric charge integrated machine (6)    Charge transmission chain (7)    Running machine transmission chain (8)    Body-building vehicle chain (9)    Body-building speed-changed combined gear (10)    Charge power gear (11)    Body-building vehicle pedal driving gear (13)    Saddle vertical rod (14)    Saddle vertical rod folded clamped shaft (15)    Beam (16)    Running machine driving roller shaft bearing (21)    Running machine power gear (22)