The inability to turn the feet up and feel weak is mainly related to nerve injury, muscle strength or soft tissue adhesion, etc., which can be recovered through oral nerve-nourishing drugs and exercise rehabilitation. 1. Nerve injury: If there is peripheral nerve injury in the lower limbs, such as peroneal nerve injury, it is easy to cause motor and sensory dysfunction, so the symptoms of the feet can not be upward weakness, you can take nerve-nourishing drugs for treatment, such as methylcobalamin or B vitamins, and so on. 2. Decrease in muscle strength: If the braking time is too long, or there are lower limb injuries, it may trigger the phenomenon of decrease in muscle strength of the lower limbs, and when the strength is insufficient, it is easy to have the symptom that the feet can’t be turned upward and the feeling of powerlessness, and it can be improved through the method of muscle strength training. 3. Soft tissue adhesion: If there is local soft tissue adhesion in the ankle joint, such as tendon adhesion, it usually affects the range of motion of the ankle joint, and therefore produces the symptom that the foot can’t be turned upward and feels weak, which needs to be treated by sports rehabilitation or soft tissue release surgery. It is recommended to consult a doctor in time and take rest before the symptoms are relieved, do not overdo exercise, otherwise it will easily lead to aggravation of the symptoms.