The main reasons for fear of wind and cold below the knee are related to knee arthritis and neurological lesions. 1. Knee arthritis: If the knee joint degenerative lesions, such as knee arthritis, the stimulation of inflammation is likely to affect the function of the knee joint, and even the phenomenon of poor local blood circulation, which triggered the performance of fear of the wind and fear of cold and pain below the knee. 2. Neurological lesions: when peripheral nerve injury in the lower limbs or lumbar spine lesions compress the nerve roots, it will easily affect the sensory and motor functions of the lower limbs, thus producing the symptoms of fear of wind and fear of cold below the knee. Fear of wind and cold below the knee may also be due to other reasons, if the symptoms are more serious, it is recommended to consult a doctor in a timely manner, to clarify the cause of the disease, and targeted treatment under the guidance of a professional physician. Usually pay attention to appropriate exercise, strengthen diet and nutrition, and pay attention to the lower limbs to keep warm, so as not to aggravate the symptoms.