Coldness in the front of the calf may be caused by spinal cord cervical spondylosis, lumbar spinal stenosis, and vascular lesions in the lower limbs. 1. Spinal cord cervical spondylosis: Acute trauma or prolonged bowing of the head can induce cervical spondylosis, which can compress or stimulate the spinal cord and lead to sensory, motor and reflex disorders, causing sensory, motor and urinary and fecal dysfunction of the limbs, including the symptom of coldness in the front of the calf. 2. Lumbar spinal stenosis: ligament hypertrophy, osteophytes, lumbar spondylolisthesis or lumbar intervertebral disc herniation can cause narrowing of the lumen of the spinal canal, leading to pressure on the dural sacs and spinal cord, which can lead to sensory abnormalities such as coldness in the front of the calves, and in severe cases, lumbar and leg pain and weakness of the lower limbs can be seen. 3. Lower extremity vascular lesions: Lower extremity arterial stenosis, embolism and other vascular lesions can lead to lower extremity blood circulation disorders, accompanied by leg pain, walking difficulties and other symptoms. Coldness in the front of the calf can also be caused by other diseases, it is recommended to improve the lower limb vascular ultrasound, MRI and other auxiliary examinations, to clarify the cause of the disease and then carry out targeted treatment.