1. If the patient operates unsanitary and violently during ear piercing, it is easy to cause infection at the ear piercing place. Once infected, it can lead to local wound bleeding, suppuration, repeated unhealing, local granulation and other related changes.

2. If the patient has a scar constitution, it is particularly easy to form scar hyperplasia locally after the ear hole. Once scar hyperplasia is formed, the scar will grow bigger and bigger, and finally surgery may be needed, resulting in more obvious auricle deformity in patients.

3. After the patient has pierced his ear, if cartilage injury occurs, it will easily lead to local infection and necrosis of cartilage, forming suppurative auricle perichondritis, and even lead to ear deformity.