The invention relates to a robot device provided with an adjustable training plane for hemiplegic rehabilitation of an upper limb, and belongs to the technical field of medical rehabilitation appliance. In order to meet space training requirements provided by a medical robot in the hemiplegic rehabilitation training, the invention provides the rehabilitation robot device provided with the training plane, which comprises a seat, the training plane, an adjusting device for the training plane, a mechanical arm arranged on the training plane, a wrist fixing bracket and an elbow bracket. The adjusting device for the training plane can adjust the height of the training plane relative to the ground and the included angle between the training plane and the horizontal plane, so as to adapt to the requirements of different patients to finish a plurality of rehabilitation training actions in a plurality of planes. The robot device has the advantages that the robot device has a simple structure, can meet the requirements of the patient on large active and passive training on various inclined planes through adjusting the pose of a working face, and can do special training for an affected joint and a corresponding muscle group through target-oriented adjustment of the inclined planes, so as to achieve better rehabilitation effect.