The girl's Adam's apple is normal. Adam's apple is a kind of cartilage with a bulge on the surface in front of the neck. This kind of cartilage is called cricoid cartilage, which is divided into two parts and has protrusions. Because of hormones, the cricoid cartilage in men develops obviously, so the Adam's apple in men will look more obvious, and women also have Adam's apple. However, due to the difference of hormones, there are not many male hormones, so the protrusion of female cricoid cartilage is not obvious. The Adam's apple is a cartilaginous process of the human larynx, which is mainly composed of 1 1 piece of cartilage, the largest of which is thyroid cartilage. Thyroid cartilage is located in the middle of the throat and consists of two quadrilateral cartilage plates. The front edges of the two plates are connected at right angles to form a front corner, and the upper end of the front corner protrudes forward to form an Adam's apple. The Adam's apple is a skeletal frame structure, which supports the muscles in the larynx and the laryngeal structure, forming a complete and unobstructed structure.