The origin of Taoism is numerous and varied, and different doors or laws have their own prohibitions, so the Covenant cannot be simplified. In this respect, bans are mostly set by people in secret society, mainly used to restrain the religious life of Taoist practitioners, or as a code of conduct when practicing or carrying out scientific methods. For example, Tao Hongjing in the Liang Dynasty, Pu Gan-guan in the Five Dynasties, Bao Sheng Lu Yao in the Song Dynasty, or Liu Ci and other health books all taboo excessive life, improper diet, moodiness and indulgence, that is, to avoid any behavior that may damage people's essence, qi and spirit. Taoist priests, on the other hand, are full of conceit, so they are forbidden to contact people who are not my companions. Not only can they not wear costumes, they can't even sit at the same table. Therefore, early Taoist priests in Shi Tian could not participate in folk sacrificial activities and fast sacrifices. This taboo mainly lies in avoiding contact with filth to prevent the pollution of sacred gas.

A similar taboo concept can also be seen in the alchemy tradition, that is, taking gas to cultivate or burn elixir. For example, people who refine gas are required to avoid contact with production or death; The choice of the burning place of the elixir must also be a secluded place that is difficult for outsiders to reach. In addition to the choice of location, days or times that are not suitable for street practice are often listed as taboo items. The taboo of Taoist ritual altar is also related to this concept of filth. The Chapter Calendar of Red Pine Seeds retains the norms of the chapters at the end of the Six Dynasties, Sui and Tang Dynasties, and lists various ritual taboos, such as: no matter whether a person or an animal dies, gives birth or enters the delivery room at home, it is a foul, so fasting, sealing and stamping are not allowed; Taoist priests are sick and guilty, and cannot be a chapter; In the last chapter, don't drink, eat meat or eat spiced food; The pledge delivered in the previous chapter shall not be lent to others for use; You can't burn smelly, hairy, leather horns and other things in its religious facilities-Tao, so as not to touch the sacred truth; In the process of Taoism, we should not criticize the image of the gods, criticize the contents of the gods indiscriminately, and laugh and fight; You must be well dressed to get into the Dow, not in a * * shape. In addition, a variety of ceremonies to avoid the sun are listed for the convenience of Taoist priests.

These bans are designed for people in the gate valve, not to regulate ordinary people who are generally not enlightened. However, modern Taoism also provides people with various sacrificial services, especially in Taiwan Province Province, where Taoist priests set up altars at home and towns to serve local believers. Therefore, the owner of fasting must abide by some prohibitions when he formally enters the altar and participates in the performance of scientific instruments. This taboo in contemporary Taoist altars mainly continues the early obscenity concept, thus restricting believers from entering the altar during the confinement, funeral or postpartum period, but it has been gradually adjusted with the evolution of the times; In addition to fasting with the Taoist priest in advance, people who are scheduled to enter the altar are forbidden to wear anything made of animal skins (that is, dead bodies), such as belts and leather shoes.

In order to avoid any foul smell that may be accidentally touched before entering the altar, Taoist priests in southern provinces of Taiwan Province usually arrange a ceremony of "cooking oil" in Lushan Mountain before the formal ceremony to remove the foul smell of the altar, utensils and all people who are about to attend the ceremony, and set water and a clean stove at the entrance of the altar for repeated cleaning every time they enter or leave the altar. As for the others who were not driven away, they were not allowed to enter the altar during the ceremony.