Cough with phlegm is a sign of inflammation of the respiratory tract. The increase in inflammatory secretions leads to phlegm symptoms, mostly related to cold, germ infection, and physical and chemical factors stimulation. It can be treated with anti-inflammatory, phlegm-reducing and cough-relieving drugs. It is recommended to take drugs such as Ambroxol Hydrochloride Oral Solution, Cough Bacillus Capsules, Cefaclor Dispersible Tablets, Pudilan Anti-inflammatory Oral Solution, etc. for treatment. If the phlegm is sticky and hard to cough up, you can also use nebulized inhalation to help dissolve and expel phlegm. Drinking honey water, Chuanbei Snow Pear water and honey grapefruit tea can relieve the symptoms of cough and phlegm. You also need to pay attention to keep the indoor air fresh, open windows regularly, avoid excessive heat and dry environment stimulation, avoid contact with fumes and paint, etc. Keep your diet light, do not eat greasy, smoky, spicy and other stimulating foods, and strictly prohibit smoking and drinking.