The possible reasons for feeling cold in the lower back include cold, lumbar muscle strain, osteophytes and so on. 1. Cold: It may be due to the fact that the clothes you usually wear do not keep you warm, such as often wearing navel dresses, etc., which can easily lead to coldness in the waist and make you feel cold in the waist in cold weather. 2. Lumbar muscle strain: lumbar muscle strain is mostly caused by chronic injury to the lumbar muscles, ligaments, fascia and other soft tissues, not timely and effective treatment and aseptic inflammation, which will cause discomfort in the muscles of the patient and other symptoms, such as the phenomenon of coolness in the lower back. 3. Osteomalacia: For patients with osteomalacia, it may be that the proliferated bone stimulates the surrounding tissues, causing obvious edema, and due to the stimulation of the cold wind, the phenomenon of feeling cold in the lower back may occur. There may be other reasons for the coolness of the lower back, it is recommended to go to the regular hospital in time, complete the relevant examination, clear the cause of the disease, under the guidance of the doctor to carry out targeted treatment or treatment.