Tinnitus is a major group of diseases that affect people’s physical and mental health. To be precise, tinnitus is a common symptom of many diseases. Clinically, tinnitus is divided into subjective tinnitus and objective tinnitus. Subjective tinnitus is usually caused by a problem in the auditory pathway, especially a change in the cochlea, the inner ear part of the human ear, and is often accompanied by a loss of hearing, or can occur earlier than deafness. In some cases, tinnitus may also occur after a tumor has grown on the nerve. It is often diagnosed clinically as neurogenic tinnitus. Objective tinnitus is usually due to a lesion in the proximal part of the ear that causes a murmur that is felt in the cochlea. Objective tinnitus is often characterized by a regular ringing, as if beating like a pulse, and is called pulsatile tinnitus. Whether it is subjective tinnitus or objective tinnitus, there is usually an etiology, so the cause should be actively sought. In the past year, I have encountered several types of tinnitus in my clinical practice, which have been treated by actively searching for the cause. One is pulsatile tinnitus due to malformation of blood vessels, which was cured by surgery. One is tinnitus caused by meningioma, which was treated by surgical removal of the tumor. There are also tinnitus caused by stenosis of the internal carotid artery and tinnitus caused by auditory neuroma, both of which have been cured by treatment. Therefore, we should change the concept that there are some tinnitus, whether subjective or objective, that can be cured.