The lecture on first aid knowledge feels that in today's world, science and technology are changing with each passing day, and traffic is increasingly developed. What should we do in the face of the casualties caused by a large number of accidents? Similarly, what should we do when we face patients who fainted due to drowning, electric shock, heavy fall and other accidents? Obviously, as K middle school students, we should not be helpless, but the reality is that many people just lack the skills in this field. On a certain day, a wonderful lecture on first aid knowledge made up this lesson for us. When I arrived at the auditorium at 12: 30, there were already many people inside. Soon, the lecture began This lecture on first aid knowledge mainly focuses on cardiac resuscitation and artificial respiration, and is given by experienced surgical experts from the Third Hospital of the City. The whole lecture consists of theoretical explanation and practical operation. The speaker is a very young woman doctor. At first, I suspected that such a young female doctor might be inexperienced in giving us lectures. However, I soon gave up the idea. With the help of computer slides, the speaker will show us clearly and humorously. Everyone took this lecture as a good opportunity to learn first aid knowledge, listened carefully, and people asked questions from time to time. I used to think that artificial respiration was a very simple thing, but after listening to the explanation of the chief doctor, I realized that there was a university question about artificial respiration. When we face patients with apnea, we should first judge whether artificial respiration is suitable for patients, which is not suitable for some patients with cervical spine injury. Secondly. Before we decide to give the patient artificial respiration, we should first check whether the patient is ventilated and judge the patient's pulse. In addition, chest percussion should be used to help patients recover their hearts. . . . . . After the doctor explained it in detail, the students were all eager to try. So, the chief doctor first gave us a whole set of cardiac resuscitation and artificial respiration demonstrations on a mannequin, and then she asked all the students to give it a try. Although we are only facing a model, it is also a practical operation after all, which can make people experience how to help patients. The students' interest in this was unexpectedly high, and the model was packed. Everyone scrambled to complete a set of first aid measures that they had just learned. . . . . . This is a short but wonderful lecture on first aid knowledge, from which we learned a lot. After all, life is precious. Usually students don't talk about life, because life is too heavy. But in the face of reality, when we suddenly face the decline of a certain life, we can't escape. Thanks for this wonderful lecture on first aid knowledge, I think I can face life more calmly!