If a patient has a sudden flow of water from the ear, the following causes may be considered: 1. After bathing or swimming, the water inside the ear is not cleared in time and may flow out after a period of time. 2. If the patient has otitis externa or otitis media, in addition to the flow of water from the ear, the patient may also have a certain amount of pain. 3. If the patient has a flow of water from the ear canal after an external impact on the ear In this case, it is considered to be cerebrospinal fluid ear leakage because the middle ear is connected to the patient’s skull. It is advisable to actively go to the hospital for examination to clarify the cause and then deal with it symptomatically. In life, you must pay attention to ensure the cleanliness of your ears to avoid the situation of running ears.