Back pain in patients with colds may be related to the release of inflammatory factors due to viral infection, or it may be related to the complication of colds such as bronchopneumonia. 1. Related to inflammatory factors: colds are caused by viral infections. When the virus invades, it can cause a systemic inflammatory response, leading to an increase in the secretion of inflammatory factors such as prostaglandins, causing an increase in nociceptive sensitivity, which can lead to back pain and other symptoms. 2. Cold complication bronchopneumonia: when the patient’s resistance is low or the viral virulence is strong, the virus may spread further, and complications such as bronchopneumonia may occur, such as inflammation involving the pleura, which may lead to back pain and other symptoms. In addition, back pain after a cold can not be ruled out when the cold caused gastrointestinal discomfort, abdominal distension and other conditions and thus reflex back discomfort and other symptoms. Due to the complexity of the causes of back pain, if the symptoms are not relieved or aggravated, you should consult a doctor in a timely manner, after a clear diagnosis to take targeted treatment.