For lymph node inflammation behind the ear, it is recommended that the patient go to the hospital for relevant laboratory tests to determine the cause of the lymph node inflammation, and then select sensitive antibiotics for treatment, taking into account the patient’s age, medical history, and the presence of liver and kidney insufficiency. Most lymph node inflammation behind the ear is caused by Gram-positive cocci, so cephalosporin, penicillin, and quinolone antibiotics can be given to treat the inflammation, and if the patient has fever, antipyretic and analgesic drugs can be given to treat the patient. In addition, it is recommended to do ultrasound of the lymph nodes behind the ear to clarify the size and nature of the enlarged lymph node mass so as to observe the effect of treatment. If the patient’s lymph nodes behind the ear appear to be ulcerated and pus, it is considered that there is an anaerobic bacterial infection, and it is recommended to do a bacteriophage test and choose a sensitive antibiotic for further treatment.