Bao Puzi mainly talks about fairy prescriptions, changes in ghosts and gods, health preservation and longevity, and troubles in treating diseases, which belongs to the category of Taoist health preservation. Its contents can be summarized as follows: discussing the universe itself, demonstrating the existence of immortals, discussing the production methods and applications of Dan medicine and panacea, discussing the study and application of various formulas, discussing various bibliographies of Taoist scriptures, and explaining the universality of world practice.

To cultivate immortality, we should accumulate virtue, make meritorious service and be charitable. In Bao Puzi, it is emphasized that people can't just start from practicing martial arts, and their aspirations in life can't just be hidden in the mountains. If they really want to cultivate immortality, they must make contributions, cultivate their morality, and rule the country. Advocating to realize spiritual liberation and physical take-off in real social life can not only help the world at once, but also be extraordinary. For example, he said, "The staff sergeant is in the three armies, the sergeant is in the city, and the corporal is in the mountains." He believes that self-cultivation can not only protect morality and lead to longevity, but also govern the world and lead to peace. Immortality can also be achieved through cultivation, and the greatest filial piety is that the body is not harmed.