Before the arrival of European explorers, plain Indians made tools such as animal bones, horns of cattle and sheep, antlers and stones, and made clothes, containers and movable conical tents from animal skins. Most semi-settled tribes are famous for weaving baskets and making pottery. Before the Spanish introduced horses, perhaps the only domestic animals were dogs. The introduction of horses had a far-reaching impact on the lives of plains Indians, which made great changes in hunting and war, but also provided valuable commodities for trade and theft, and theft became the fuse of war.

Although tribes like the Azina people believe that there is a supreme god, other tribes don't, and the Crow people are an example. However, almost all religious ceremonies are held in the Indian plains, from simple weddings and funerals to important ceremonies that last for several weeks. Among all the plains Indians, there is a warlock, or a Yellow Sect monk, who is responsible for treating diseases and using witchcraft to locate enemies, prey and lost items. They attach great importance to the phenomenon of "showing saints" and believe that the success of life should be attributed to the help of the gods.

The continuous influx of white settlers into this area has completely changed the culture of plain Indians. The hunting economy of nomadic tribes collapsed due to the extinction of bison at the end of 19, and the local handicraft industry was also devastated by the import of industrial products such as metal utensils and cloth. Diseases brought by white people and wars against white people greatly reduced the number of Indians. Once Indians were "placed" on the reservation, more riots continued to occur. Indians of nomadic tribes found that domestic cattle were far inferior to bison and could not be used as substitutes; Semi-settled people always think that farming is a woman's business, and they also resist the change of division of labor brought about by the introduction of plows. Many Indians' traditional culture has been destroyed, so they are depressed, pessimistic and idle, and then rely on government relief to make a living. Although the Indians resisted such changes, they finally had to give in. However, even if some Indians do manage to adapt to the white culture, they often find themselves in an awkward position among their compatriots.