The bulge in the neck is commonly seen in the following two conditions: First, the lymph nodes in the neck are enlarged. If the bulge is the size of a soybean or peanut and has good mobility, no adhesions and no pressure pain, no special treatment is generally needed. If the mass is larger, with pressure pain and poor mobility, or if the baby is accompanied by fever and poor mental status, it is necessary to seek medical attention and, if necessary, to give puncture examination at the bulge. Second, congenital oblique neck. It is caused by spasm of the sternocleidomastoid muscle, which is a muscle in the neck, and can be treated by local massage if the baby is within 6 months of age. If it is 6 months or more than 1 year old, surgical treatment is required. In addition to bulging, it is often accompanied by head deviation to one side and asymmetric facial performance.