Yellow water from ear piercing is mainly seen in the following cases: 1. Patients with earrings inside the ear piercing after piercing may have an allergic reaction with the patient’s skin, and the allergic reaction is followed by local itching of the ear piercing and yellow exudate. The earrings should be removed and an anti-allergy ointment should be applied topically for symptomatic treatment. It is recommended that the patient replace the earring with a silver earring, the possibility of allergy will be smaller. 2, the patient’s earring is locally infected, after the infection there is a yellow or purulent exudate, clinical examination of the local can appear redness, swelling, pain, and even local skin edge necrosis and other related changes. Local disinfection treatment with iodophor or alcohol and local application of antibiotic ointment are needed for treatment.