In our daily life , some medicine knowledge are very helpful to our health. and they are very useful in some emergency time, such as how to give artificial respiration（人工呼吸），how to stop bleeding（止血）,how to deal with some wound（伤口）.

If you meet someone has asphyxia（窒息） or can not breathe for the time being for other reasons, you should quickly give artificial respiration，or nip the philtrum（掐人中）, make him or her awake. When you are giving artificial respiration，you should do as follows:

1) Do your artificial respiration quickly ,for one second is so important in that situation;

2) You must assure that his/her breath is smoothly（顺畅地）;

3) The external conditions are safe for the patient, for example ,no toxic gas （有毒的）nearby;   

4) Make sure your style（方式） is right and safe for the sick;

5) Make sure that there are enough oxygen to the patient;

If you hurt yourself or your friend are wounded, when you are playing games outside or doing housework, you should know how to stop bleeding quickly.

First , you should utilize the saline（生理盐水） to wash your wound , then use the clean swab （纱布）bandaging it. If it is serious , you must deal with it quickly and go to see the doctor.

Furthermore, we should learn more aid senses（救护意识） for general need , so we can deal with some small problems easily .