After drinking alcohol if conscious ears buzzing, usually for the following reasons: First, the most common reason is the vasodilatation after drinking too much alcohol, triggering neurological tinnitus, drinking too much alcohol in the ethanol will quickly enter the gastrointestinal tract through the esophagus, in the liver under the action of the enzyme acetaldehyde dehydrogenase, ethanol will be rapidly converted into acetaldehyde, and then will be converted into acetic acid. Acetaldehyde is a toxic substance that allows rapid expansion of capillaries, the distribution of capillaries in the ear is more developed in the region, especially to produce the effect of capillary expansion, capillary expansion will cause neurotinnitus, conscious ears buzzing, long time will also lead to neurological deafness. Second, after drinking too much alcohol buzzing in the ears, but also because ethanol expansion of the aorta caused by a transient TIA, that is, cerebrovascular blood supply is incomplete, or aorta transient vascular pulsation or transient intracranial pressure increase, will lead to drinking after the ears buzzing behind the situation.