There are many reasons for the emergence of fear, what is going on, there are several aspects: 1, fear is a unique human emotional response, a strong protective effect on people, and is a human instinct. Because there is a very strong danger to the unknown, or the psychology of fear is what allows people to inspire protective behavior, and then free from danger, from disaster, so fear is an instinctive phenomenon, not all bad for people, but there are certain benefits. 2, fear as an emotion, there may also be too much anxiety, and even some overprotective self, such as some people are introverted and sensitive, easy to anxiety, nervousness, it is possible for some small things on the fuss, think it is a huge danger, thus special fear, there is no way to quiet down, serious times there may be anxiety disorders, phobias, such as anxiety about whether they have diseases, suspect their health problems, or fear of heights, talking and communicating with people when particularly afraid, blushing, fear of making a fool of themselves, etc. 3, fear also has It may come from the unknown, especially for the future, there is no prediction, no sense of control of the reaction, especially some people have a very strong performance, especially perfectionism, so they will want to have a sense of control over everything, if there is no way to predict the future, there is no way to have a sense of control, it is very fearful, feel insecure, and even for death and tomorrow have a very strong sense of fear, the above these These reasons are more common.