Patients yawn all day long, mainly consider the following reasons: 1, it means that the patient’s sleep quality is not good, the patient may stay up late, sleep deprivation or dream more at night, resulting in the patient’s low sleep quality, there may also be patients with sleep apnea at night, resulting in the patient’s brain is in a stage of chronic ischemia, lack of oxygen, the patient will also show the overall yawning, sleepy problem. 2, there It may be a manifestation of lack of oxygen in the brain. Patients are usually obese and have basic diseases such as hypertension, diabetes, hyperlipidemia, cerebral atherosclerosis, etc. When patients usually have less activity and their blood is in a high-fat, high-viscosity state, it is easy to cause chronic ischemia and lack of oxygen in the brain, which manifests as yawning and sleepiness all day long. 3. 3. Patients with mental anxiety and depression may also appear.