The invention discloses upper limb rehabilitant robot fingers and a wrist training device. The device comprises an installation base, a wrist rotary movement mechanism and a finger gripping and stretching exercise mechanism, wherein the wrist rotary movement mechanism is driven by a first servo motor through a two-stage reducing mechanism; a first-stage reducing mechanism is a gear reducer and is arranged on the front end of the first servo motor; a second-stage reducing mechanism is formed by intertwining a shaft sleeve and a rotary semi-circular ringthrough steel wire ropes and is located on the front end of the first-stage reducing mechanism; the first servo motor is arranged on the installation base; the finger gripping and stretching exercise mechanism is driven by a second servo motor through a two-stage reducing mechanism; a first-stage reducing mechanism is a gear reducer and is arranged on the front end of the second servo motor; the second servo motor is arranged on a palm support plate; the palm support plate is fixed on the rotary semi-circular ring of the wrist rotary movement mechanism. The wrist training device provided by the invention is simple in structure and strong in functionality.