It is necessary to consider the possibility of bacterial infection after a cold, such as common Streptococcus pneumoniae, hemolytic Staphylococcus or some gram-negative bacteria, such as Klebsiella pneumoniae and Pseudomonas aeruginosa. Such patients can use oral antibiotics, such as amoxicillin, azithromycin, levofloxacin, moxifloxacin and other symptomatic treatment. If oral medicine can not alleviate, some antibiotics can be used intravenously. At the same time, such patients can be treated with some expectorant drugs, such as ambroxol oral liquid, compound liquorice oral liquid, Chuanbei loquat cream, Anningpin capsule and other symptomatic treatments. Patients with colds should pay more attention to rest, avoid staying up late and avoid fatigue. Mainly light diet. Blood routine test and CRP should be checked to further clarify.