A wearable intelligent exoskeleton seat apparatus includes a thigh mechanism, a knee joint mechanism and a shank mechanism, the knee joint mechanism is fixedly coupled to the shank mechanism and the thigh mechanism respectively； the knee joint mechanism includes a knee joint support rod, a motor frame, a motor, a movable base, a flexible spring piece, ratchet teeth, a ratchet tooth shaft, a ratchet wheel, a ratchet wheel shaft and a shank connecting base； the knee joint support rod is fixedly connected with the thigh mechanism； the motor is mounted on the upper end of the knee joint support rod through the motor frame； the ratchet teeth is rotatably mounted to the knee joint support rod via the ratchet tooth shaft； the ratchet wheel is rotabaly mounted to the knee joint support rod via the ratchet wheel shaft； the ratchet teeth and the ratchet wheel are mounted directly opposite to each other.
