The hemiplegic forearm function recovery training device includes a forearm mounting portion (2) to which the forearm portion (S) is mounted. The forearm mounting portion (2) includes a mounting body (20) having a forearm fixing portion (22) for mounting the forearm portion (S) and a gripping mechanism (23) that can be gripped by the hand of the forearm portion (S). An inner frame portion (2B) that fits with the mounting body (20) and can rotate around the forearm portion (S), and an outer frame portion (2A) that guides the inner frame portion (2B) in the direction of rotation. While acquiring the rotation angle information of the inner frame part (2B), the inner frame part (2B) is repeatedly rotated forward, stopped, reversed, and stopped, and in the normal rotation, the forearm attachment part (forearm attachment part) that causes muscle tone and stretch reflex on it. 2) Control the angular velocity or acceleration of the inner frame part (2B) to stimulate the training target muscle, and in reversal, the inner frame of resistance to maintain the stimulation to the training target muscle and maintain muscle tone. A control unit that performs a series of controls assigned to the unit (2B) is provided.片麻痺前腕機能回復訓練装置は、前腕部（Ｓ）を装着する前腕装着部（２）を備える。前腕装着部（２）は、前腕部（Ｓ）を装着する前腕固定部（２２）と、前腕部（Ｓ）の手で把持可能な把持機構（２３）とを有する装着体（２０）と、装着体（２０）と嵌合し、前腕部（Ｓ）を中心として回転可能な内枠部（２Ｂ）と、内枠部（２Ｂ）をその回転方向に案内する外枠部（２Ａ）と、内枠部（２Ｂ）の回転角情報を取得しつつ内枠部（２Ｂ）の正転、停止、逆転、停止を繰り返し行い、正転では筋緊張とその上の伸張反射を引き起こす前腕装着部（２）の訓練目標筋を刺激とするために内枠部（２Ｂ）の角速度又は加速度を制御し、逆転では訓練目標筋への刺激を持続して筋緊張を維持するために抵抗力を内枠部（２Ｂ）に付与する一連の制御を行う制御部と、を備える。
