Water in the left ear is extremely common in life. When water enters the ear during bathing, hair washing, or swimming, it can cause symptoms such as ear blockage and ear discomfort. Since the outer ear canal and middle ear are separated by the eardrum, water will not easily enter the middle ear cavity and will not cause inflammation, so there is no need to worry too much. If the water in the left ear is difficult to get out and causes ear congestion, hearing loss and ear pain, you can go to the hospital and ask an otolaryngologist to use a professional negative pressure suction device to suck out the water. In addition, to prevent infection after the water is cleaned up, you can use topical oxyfluoxacin ear drops for three days and keep the external ear canal clean to avoid getting water in the external ear canal again.