Dry throat and phlegm are usually caused by inflammation of the respiratory tract, and effective anti-inflammatory treatment is needed to relieve dry throat and phlegm. If there is an elevation of white blood cells in the routine blood, it is a bacterial infection and needs to be treated with antibiotics. If you are not allergic to penicillin or cephalosporin, you can take amoxicillin or cefixime for treatment. If there is no elevation of white blood cells, and the sputum is thin or white, it is a viral infection, and then you can take antiviral drugs. For example, Ribavirin or Four Seasons Antiviral Combination, Blue Scutellaria Oral Liquid or Pudilan Anti-inflammatory Oral Liquid are effective. You can also take phlegm-transforming drugs at the same time, the more effective is the aminoglutethimide oral solution.