Most of the yellow water inside the ear is caused by eczema infection of the external ear canal. In addition to yellow water, the patient will also suffer from itching of varying degrees, which is commonly caused by infection, allergy, and low immunity of the body. In terms of treatment, the main thing is to use topical ointments, such as Euthyrox or hydrocortisone ointment, for symptomatic use. In case of late infection, antibiotic ointment, such as Bactrim, can also be applied in combination. Some repeated infections, and not easy to recover, can be combined with oral anti-allergy drugs, as well as drugs to regulate the immune system of the body comprehensive treatment. Avoid eating spicy and stimulating foods during treatment, including foods high in protein, which also have an impact on the recovery of the disease.