Patients with yellow water flowing from bumps on the outside of the ear may be caused by eczema of the outer ear, viral herpes, boils and so on. 1. Eczema of the external ear: Eczema of the external ear refers to the eczema that grows on the external auditory canal, auricle and the skin around the ear. The cause of the disease is not clear, and it may be related to the stimulation of medication, endocrine disorders, mental and other factors, when the eczema of the external auditory canal is in acute attack, there may be erythematous spots or small corn-like papules, and after the rupture of the blisters of these papules, there is a yellowish secretion, and yellow scabs will be formed after solidification and other conditions. 2. viral herpes: viral herpes is mainly caused by human herpes virus infection, a class of skin diseases, when the patient’s ear peripheral localized by the herpes virus infection, there may be a single or multiple, localized or clustered distribution of blisters and bumps, when the blisters are damaged and ruptured, there may be a yellow ooze. 3. Boils: boils are acute suppurative lesions caused by infection of individual hair follicles and their surrounding tissues by pathogenic bacteria such as Staphylococcus aureus, mainly manifested as local redness, swelling, heat and pain in small hard nodules, which are conical and elevated, with yellowish-white pus in the center of the nodule, and pus or yellow exudate will be discharged when it is ruptured. It is recommended that patients seek medical examination in time to clarify the cause of the targeted treatment, pay attention to the care of the affected area in life, avoid the wound touching water or contact with dirt, so as not to aggravate the condition.