Disclosed herein is an outdoor mobile fitness machine. The outdoor mobile fitness machine of the present invention includes a main frame (110), to which a front wheel (12), a rear wheel (130) that is a drive wheel, and a set of handlebars (140) are mounted. The outdoor mobile fitness machine is moved by rotation of the drive wheel, which is rotated by an electromotor (160). The outdoor mobile fitness machine further comprises a fitness device, which is provided on the main frame (110) and operated by feet of a user; a sensor (195), which determines if the fitness device is in operation and detects an operating speed of the fitness device; and a controller (200), which determines both whether the fitness device is in operation and an operating speed of the fitness device and variably controls an electric current to be applied to the electromotor (160), thus automatically controlling motion and moving speed of the fitness machine.