Normally coughing will be aggravated by eating sweets. Because eating sweet when coughing will stimulate the airway, resulting in increased sputum and sticky, making the cough more pronounced, not conducive to the alleviation of the condition. 1. Stimulate the airway: usually coughing is due to an inflammatory reaction with the airway, resulting in mucosal congestion and edema and inflammatory secretion oozing changes. At this time, the mucous membrane of the airway is damaged and is very sensitive to external stimuli. Sweet food contains a lot of sugar, which can easily lead to airway mucosa stimulation and aggravate the symptoms of coughing. 2. Lead to increased sputum and sticky: sweet food is not a light food, which contains a lot of sugar, as well as different additives, etc. These substances can easily cause the airway mucosa to become irritated. These substances tend to cause the phlegm in the airway to become relatively more viscous, and also further stimulate the airway secretions to increase, which can aggravate the symptoms of coughing. Patients should eat light, easily digested and absorbed foods that are low in salt and sugar.