The present invention discloses a palm support-type finger rehabilitation training device and a use method thereof. The device comprises a mounting seat, a finger rehabilitation training mechanism arranged on the mounting seat, and a driving mechanism for driving the finger rehabilitation training mechanism to move; the finger rehabilitation training mechanism comprises four independent and structure-identical finger training combined transmission devices respectively corresponding to an index finger, a middle finger, a ring finger and a little finger of a human body hand structure; the mounting seat has a supporting surface capable of supporting a human body palm; each set of the finger training combined transmission devices all comprises a MP motion sliding chute, a PIP finger sleeve, aDIP finger sleeve and a connecting rod transmission mechanism, a force sensor collects force feedback information to determine and conduct force stability control, and a space position sensor is usedto collect spatial angle information to realize real-time control of finger space positions. The method is suitable for assisting active and passive rehabilitation training of patients with hand hemiplegia due to stroke.