It is better not to eat icing sugar during coughing because it is too sweet, but it can easily cause the accumulation of phlegm, which is not easy to cough out and can aggravate the infection. Once bacterial infection occurs in the mouth, it will easily lead to upper respiratory tract infection or oral and dental infection, which will aggravate the infection and is very unfavorable to the recovery of cough. Therefore, it is better not to eat rock candy during coughing. Not only is it not allowed to eat rock candy, it is also not recommended to eat more acidic foods, which tend to thicken the phlegm and make it less easy to cough up. In addition, you should not eat meat or fish. In Chinese medicine, it is said that “fish produces fire and meat produces phlegm”, so eating fish or meat is not good for cough recovery and can aggravate the cough. During coughing, it is recommended to eat fruits that clear heat and detoxify the body, drink more water, and eat some pears, which can clear heat and detoxify the body, stop coughing and dissolve phlegm.