The main functional role of the adenoids is defense against immunity. Adenoids, also known as pharyngeal tonsils, are part of the pharyngeal lymphatic ring, which is an important structure in the defense of the upper respiratory tract. Adenoids is a lymphoid tissue structure composed of a variety of immune cells, is one of the body’s immune organs, the nasal cavity inhaled dirt and pathogenic microorganisms have a certain adsorption effect on the maintenance of local nasopharyngeal cavity and the whole body has a certain role in the normal immune function. Adenoids are present after birth and are most prominent at the age of 6-7 years, usually gradually shrinking after the age of 10 years. Adenoids called pharyngeal tonsils, belonging to the tonsil tissue, tonsil birth center contains a variety of phagocytes, can be phagocytosed to destroy a variety of pathogens, can produce a variety of natural immunity cells and antibodies, can be eliminated to destroy from the blood, lymph or tissue and other invasion of harmful substances in the organism. Adenoid hypertrophy, when a series of symptoms, such as nasal congestion, causing ear symptoms secretory otitis media, affecting the development of facial bone, respiratory function, nerve reflexes, etc., adenoid face, inattention, irritability and other uncomfortable symptoms, it is recommended that surgery to remove the adenoids. Generally, low temperature plasma adenoidectomy is performed. Therefore, the adenoids have an important role in the body’s immune function, if you feel uncomfortable, it is recommended to consult a doctor in time.