Can metronidazole be used to treat a sore throat, need to be judged according to the specific circumstances, for anaerobic bacterial infection caused by a sore throat can be treated, other diseases caused by the treatment effect is not ideal. Metronidazole is a kind of anti-inflammatory drugs, mainly can be used to treat or prevent diseases caused by anaerobic infections, if the sore throat is caused by anaerobic infections in the oral cavity, generally can be used to achieve a better therapeutic effect. If the sore throat is caused by pharyngitis, tonsillitis and other diseases, this kind of disease is generally caused by pus bacteria infection, in this case the effect of the drug may not be very satisfactory, you can use amoxicillin, cefuroxime and other drugs to treat. The clinical sore throat should not be used on its own, need to be hospitalized, by the doctor to make a diagnosis after the reasonable use of medication.