The invention relates to the technical field of intelligent medical auxiliary equipment and discloses a wearable single lower limb intelligent assisting exoskeleton and a control method thereof. The wearable single lower limb intelligent assisting exoskeleton includes a power component, a controller, a thigh support part, a calf support part and a foot sole part, wherein the thigh support part, the calf support part and the foot sole part are connected in sequence, the thigh support part and the calf support part are hingedly connected by a limit assembly, and the calf support part and the foot sole part are connected by a carbon fiber elastic plate. The wearable single lower limb intelligent assisting exoskeleton avoids secondary injury of a human body during exercise; at the same time, as the carbon fiber elastic plate is selected for connecting between the foot sole part and the calf support part, the carbon fiber elastic plate can store a part of energy and also can release a partof energy when the foot sole leaves the ground to achieve an effort-saving effect and to avoid the rigid contact of the foot sole with the ground when the foot sole falls onto the ground.