When there is an emergency situation, such as a critical illness or an accidental injury, you can call the emergency room. In some hospitals, if there is no general outpatient clinic at night, you can also call the emergency room if you have uncomfortable symptoms. Urgent care is mainly for those who have an acute or serious illness, or those who have sudden injuries. Clinically, the main types of diseases include severe infections, acute precordial pain, acute abdomen, acute traumatic brain injury, poisoning, accidental injury, burns, severe hypertension, bleeding, etc. All of them can be registered in the emergency department. The characteristic of the emergency department is that the treatment is more timely, so when patients like the above-mentioned come to the emergency department, they are often in a green channel and can be rescued as soon as possible.