Buttock cold consider hip blood supply insufficiency, lumbar disc herniation, lower limb arteriosclerosis, etc.. 1. Insufficient blood supply to the buttocks: commonly found in people with little exercise, malnutrition, improper warmth, slow blood flow to the buttocks is difficult to produce sufficient heat, you will feel cool. 2. Herniated lumbar intervertebral disc: history of trauma, obesity, genetic history and other people, easy to cause lumbar intervertebral disc herniation, which in turn oppresses the blood vessels to appear waist and buttocks and lower limbs cold, pain, fatigue, and so on. 3. Arteriosclerosis of the lower limbs: mostly occurring in smoking, endocrine abnormalities, blood coagulation abnormalities in middle-aged and elderly people, typically manifested as intermittent claudication, lower body cold, feeling abnormalities and so on. The cause of cold buttocks varies from person to person, it is recommended to consult a doctor in time, under the guidance of the doctor for targeted treatment.