Disclosed is a legs rehabilitation device. The legs rehabilitation device according to an exemplary embodiment of the present invention includes a first sensor that senses a load applied from a support surface of one leg of a rehabilitating patient a second sensor that senses an angle of the one leg a third sensor that senses position or motion of the other leg of the rehabilitating patient and a rehabilitation determination unit for communicating with the first sensor, the second sensor, and the third sensor and determines whether the legs rehabilitation succeeds, based on load information received through the first sensor, angle information received through the second sensor, and position or motion information received through the third sensor.
