Biological rhythm affects people's behavior, especially the safety of production. In the critical period of rhythm, people are prone to physical decline, emotional fluctuation and mental trance, and people's behavior fluctuates greatly, especially the more critical points overlap, the greater the danger. If workers operate in production posts at this time, they are more likely to make operational mistakes and even lead to industrial accidents. Many scholars' investigations and statistics on accidents can fully illustrate this point. In addition, the application of biological rhythm theory to guide safety production and safety management shows that biological rhythm analysis is a powerful measure to prevent accidents.

The rhythm phenomenon that the perception time is dominated by time in living beings is called "biological clock" or "biological rhythm"; This kind of internal phenomenon reflected in the human body is traditionally called luck, and it is called human biological rhythm or luck rhythm in contemporary times. But strictly speaking, the biological clock is different from the expression of human biological rhythm. Among them, the former belongs to foreign products, while the latter belongs to orthodox China elements. The practice of "Human Biological Rhythm" proves that only the elements from orthodox China can truly reflect the basic laws of the internal rhythm of the human body, and it also has operational social practical value.