Frequent colds may be related to poor lifestyle, low immunity or caused by other illnesses. Colds are mainly related to viral infections, such as rhinovirus and adenovirus. Among the triggers for colds are exposure to cold, rain, overwork, prolonged smoking or drinking, etc. Frequent colds may occur if the patient has these poor lifestyle routines. Frequent colds may also occur if some people have a weak constitution or diseases that affect immunity, such as diabetes and nephrotic syndrome, which result in low resistance. Cold symptoms such as nasal congestion, runny nose, pharyngeal discomfort, and cough may also be caused by other illnesses such as allergic rhinitis, sinusitis, and tonsillitis, which are mistaken for frequent colds. It is recommended that patients with symptoms of frequent colds should consult a doctor in a timely manner to clarify the cause of the disease and follow the doctor’s instructions for treatment. Daily attention should be paid to ensure adequate sleep and appropriate physical exercise.