Water coming out of the ear may be caused by diseases such as external auditory canal eczema, otitis externa, suppurative otitis media, cerebrospinal fluid ear leakage and so on. 1. Eczema of the external auditory canal: itching, pain and burning sensation may occur when eczema of the external auditory canal occurs, scattered blisters and papules may appear locally, and yellow watery secretion may flow out after breakage, which may lead to the manifestation of water coming out of the ear. 2. Otitis externa: inflammation of the external auditory canal can lead to edema of the skin, oozing, itching, pain, flaking and other manifestations, with the progress of the disease, the external auditory canal can appear thin secretion, and can gradually develop into purulent secretion, which can appear watery ears. 3. Suppurative otitis media: Suppurative otitis media can have symptoms such as pain, tinnitus, hearing loss, fever, etc. Ear effusion is also its characteristic manifestation, and when the infection is serious, the sustainability of pus in the ear can occur. 4. Cerebrospinal fluid ear leakage: for patients with trauma or previous history of ear surgery, it is necessary to exclude the possibility of cerebrospinal fluid ear leakage, and it is necessary to send the secretion to biochemical tests to clarify the nature. When water comes out of the ear, you should consult a doctor in a timely manner, and under the guidance of a specialist, you can actively carry out appropriate treatment to help relieve the symptoms as soon as possible.