Colds are upper respiratory tract infections, mostly caused by viral infections. When the symptoms of chest tightness appear, we need to consider the complications or other diseases. 1. Complications: pathogens invade the body, causing congestion and swelling of the respiratory mucosa and producing a large amount of inflammatory exudate. When the body resistance is low, the pathogen may invade the bronchial tubes and alveoli, leading to complications such as bronchitis and pneumonia, which may cause symptoms such as chest tightness. 2. Combination of other diseases: If the patient is combined with bronchial asthma, the cold may trigger an asthma attack, and symptoms such as chest tightness and shortness of breath may occur. If the elderly have chronic cardiac insufficiency, the cold can increase the burden on the heart, thus causing acute exacerbation of chronic heart failure and chest tightness. Chest tightness can also be caused by other diseases. If the symptoms are not relieved or aggravated, it is recommended to consult the doctor in time, improve the relevant examination and carry out reasonable treatment under the doctor’s guidance.