Frequent colds in the elderly may be related to poor immunity, while rhinitis, allergies and other diseases can not be ruled out. If an elderly person has frequent colds, the first thing to consider is that it is related to poor immunity. Colds are usually caused by viral infections, and older people are more susceptible to viral infections than younger people due to lower immunity, which can lead to cold symptoms. In addition, the frequent occurrence of cold symptoms such as cough and runny nose may not be a cold, and we cannot rule out the possibility that other cold-like illnesses (e.g. rhinitis, allergies, etc.) may also lead to the frequent occurrence of such symptoms. Therefore, it is recommended to seek medical advice in a timely manner, under the guidance of the doctor for blood tests, rhinoscopy and other tests, to determine the cause of the disease and then follow the doctor’s instructions for treatment.