Congenital jugular phiebectasia refers to a significant expansion of the internal jugular vein due to congenital venous valvular dysplasia resulting in venous blood reflux, while a few children with external jugular vein or anterior jugular vein can also be dilated, and the dilated section of the vein is pike shaped or hair-like. It is more common in boys, and can be unilateral or bilateral. Diagnosis: 1. When the child is calm, the appearance of the neck is normal, but when there is an increase in intrathoracic pressure, such as crying, singing, or holding breath, an expansive, soft, easily compressible mass can be seen in the lower part of the sternocleidomastoid muscle and its posterior aspect, with no tremor or movement. 2.A few children have dizziness or headache. 3.The diagnosis can be confirmed by ultrasound of the neck, and puncture and angiography are usually not needed. 4.It should be differentiated from laryngeal diverticulum and upper: mediastinal cystic hydatid cyst. Treatment: 1. Asymptomatic children do not need treatment. 2. 2.Anyone with symptoms or special appearance requirements can be treated surgically after 6~8 years old.