Back pain after a cold is common, mainly because a cold can cause chills and fever in the body, resulting in a systemic inflammatory response, leading to the accumulation of lactic acid in the muscles of the lower back, which leads to back pain. When the pain occurs, pay attention to the low back area to keep warm, avoid getting cold, it is best to go to the hospital to check the blood routine, urine routine, etc.; if there is a viral infection, you need to carry out antiviral treatment, and at the same time drink more water, muscle aches and pains do not need to pay attention to, wait for a period of time after the cold heals, the back pain will automatically disappear, do not worry too much. If you still have the above symptoms after the cold symptoms are obviously controlled, other diseases, such as lumbar spine lesions and lumbar muscle strain, can be ruled out by CT of lumbar spine or MRI of lumbar spine.