When itchy throat, cough and white foamy sputum appear, first of all, pharyngitis should be considered as the cause, and secondly, the above clinical manifestations are not excluded from the infection of pathogenic microorganisms. If the patient is diagnosed with pharyngitis, he/she can take Fatty Sea tablets or Golden Voice tablets, drink more water, pay attention to vocal rest, and avoid food with high salt, grease and sugar content. If patients have infections caused by pathogenic microorganisms, they need to improve the blood routine, C-reactive protein, mycoplasma antibodies and other related tests to evaluate the possible infections of pathogenic microorganisms and make targeted treatment, for example, bacterial infections need to be treated with antibiotics, commonly used antibiotics such as cefixime, amoxicillin, azithromycin, levofloxacin, etc. If patients have combined mycoplasma infections need to use anti-mycoplasma If the patient has a combination of mycoplasma infection, anti-mycoplasma drugs such as azithromycin and roxithromycin should be used.