Many people may not know that calligraphy handwriting is inextricably linked to a person's psychological and physiological activities. Modern psychology has included handwriting in the scope of research, but because it is a relatively new subject, it has not been included in the study. Although it has entered people's field of vision with great fanfare, calligraphy and handwriting psychology can always trace its shadow from ancient times to the present. For example, when appreciating the aesthetic standards of calligraphy, observing its shape and comprehending its meaning, when appreciating Yan Zhenqing’s calligraphy, there will generally be concrete images like this: Fan Kuai holding a shield, King Kong dazzling and other specific images. From here we can know Yan Zhenqing is a Confucian scholar who embodies the characteristics of a hero, a strong body, and an upright and majestic personality. From his calligraphy works, it is not difficult to see that most of his works have upright and majestic artistic qualities. Therefore, there has been a saying that "people are like their words, and their words are like their people". It can be seen from this that our ancestors have had the practice of identifying human nature from calligraphy handwriting a long time ago, but they have not been separately proposed as a subject for independent research.