Paronychia, a monogenic genetic disorder, is inherited in an autosomal dominant manner. According to the study, the causative gene for the epiphora phenotype was localized at d7s2546-d7s550, with a genetic distance of 5.38 cM, and at chromosome position 7q36.1-q36.2. The main manifestation of the parotid ear is the appearance of single or multiple redundant objects in front of the ear screen, cheek or neck, basically unilateral, a few bilateral, soft or with cartilage-like hardness, with different shapes, which can be columnar, globular, bifurcated and so on. Some patients also have facial deformities. It may be caused by a mutation in one of the genes controlling the auricle due to the mother’s history of infection or medication during pregnancy, for example. Treatment of the parotid ear requires surgery to remove it. The disease needs to be treated under the supervision of a doctor to avoid adverse effects.