The first step is to determine the cause of the pouch behind the ear, and then determine how to treat it. Lymphadenitis behind the ear, sebaceous cysts behind the ear and other diseases can lead to the growth of bags behind the ear, the above mentioned diseases are usually caused by the sebaceous gland secretion is relatively strong, or cold, cold resistance to decline. If it belongs to lymphadenitis behind the ear, you need to apply antibiotic drugs in time, such as roxithromycin dispersible tablets or cefixime dispersible tablets, and so on. If the sebaceous cyst behind the ear, you can apply local ointment treatment, such as mupirocin cream, if a long time can not be recovered, you can go to the otorhinolaryngology department for surgical resection, try not to squeeze to avoid infection, do not eat ginger, chili peppers and other stimulating food.