How to call “120” correctly? When someone has a sudden illness or trauma, don’t hesitate to call 120 as soon as possible. This is faster than sending yourself to the hospital or calling a cab, and you can get medical help at the scene and on the way to prevent the condition from deteriorating. When you call “120” emergency number, you should pay attention to the following aspects: (1) When you call “120”, you will hear a loop voice prompt “You have entered the 120 emergency system, please do not hang up. “, indicating that the call has been connected. As there are more calls at the same time, the computer will sort all the calls and you need to wait for a while, so you should not hang up immediately. Your call for help is not really accepted until the phone is answered manually. If the queue is too long and the call is disconnected, please redial the “120” emergency number immediately. (2) When calling for help at home, tell the exact address, to **Room **, Lane **, **Road**, not just an inaccurate address such as **shop across the street, call for help should be familiar with the address of the sick and wounded. When calling for help outdoors, try to tell the exact place or intersection. (3) To explain the main symptoms or conditions of the sick or injured, such as fainting, falling down from a building, falls, breathing difficulties, vomiting blood, car accidents, etc., do not just say “people can not be” and other vague concepts. Tell the approximate number of people injured, the extent of injuries, gender and age distribution of the group. (4) Tell the phone number you are using, because in case the emergency personnel cannot find the sick or injured person at the scene, they can contact them again and should let the “120” telephone station hang up first. (5) While waiting for the ambulance to arrive, do the following: ①It is best to prepare the necessary items to go to the hospital, such as the patient’s medical record card, medical insurance card, cash, etc. ②Remove various items in the aisle that are obstructing the transport of the sick and wounded so that the patient can be transported more quickly. (③It is best to ask someone to go to the entrance of the community or the accident site to guide the ambulance staff in order to reach the scene as soon as possible. (6) If there is someone around the injured patient who has learned first aid, they can perform self-help and mutual aid. For patients in cardiac arrest, immediate cardiopulmonary resuscitation will greatly increase the success rate of resuscitation.