There is a lump on the baby’s clavicle, which may be related to the following reasons: 1, there may be birth injury, the so-called birth injury refers to the baby in the process of delivery of the birth canal, was excessively extruded, or production equipment damage, and then lead to the neck, clavicle around the destruction, such as here there may be a fracture of the clavicle, or the emergence of a subcutaneous hematoma, which led to the here there is a protruding 2, there may be the presence of the here Occupational diseases, such as lipoma or other tumors. 3, there may be congenital malformation of the clavicle, which is often due to congenital hereditary factors, resulting in bony deformities around the clavicle. 4, it may be due to the enlargement of lymph nodes, such as inflammation and infection in or around the child, which may cause lymph node enlargement of the supraclavicular fossa, which can be felt or seen prominently here. 5, there is a risk of lymph node swelling, which can be caused by the presence of lymph nodes. 6, it may be due to the presence of lymph nodes. This may cause lymph node enlargement in the supraclavicular fossa, resulting in a swelling that can be felt or seen protruding from the skin surface.