The present disclosure relates to a biomimetic lightweight wearable suit and wearable suit design method, particularly to a biomimetic lightweight wearable suit that includes a suit portion that covers a body region from the knee to the sole of the foot; a force transmission pattern portion that surrounds around joints and muscles by mimicking a tendon to disperse a force of an actuator to a garment and a body; and an anchor point portion that is designed to surround a joint by mimicking a ligament.