Chronic diseases, simply understood, are some common diseases of old age, such as hypertension, coronary heart disease, diabetes, heart rate failure, including some diseases of the digestive system, such as liver cirrhosis. These diseases have a long course, which can last for more than 5-10 years. Patients may be hospitalized repeatedly throughout the year for treatment, and treatment of the disease may be repeated, mostly in middle-aged and elderly people. In the acute stage, the patient may be hospitalized, but generally when the disease is relatively stable, the main thing is to go home and take regular oral medication to maintain a relatively stable state. Patients with chronic disease must pay close attention to the usual management, and take regular oral medications to stabilize blood pressure, blood lipids, heart rate and blood sugar, so as to maintain a stable state.