A total of 4 stupa-shaped burial niches have been discovered in Nanchong City, three in the Daxiangshan Grottoes and one in the Baishan Cliff Tombs, all dating to the Song Dynasty. The square recesses in these niches were mainly used for placing the remains of Buddhist devotees. The 18th niche in the Daxiangshan Grottoes was primarily built according to the Buddhosnisa Vijaya Dharani Sutra translated by Buddhapala. The body of the stupa was only engraved with mantras. This resulted not only from the trend toward simplification in sutra inscription at the time, but also from the height and number of sides of the stupa, as well as the important function of the mantras. The appearance of stupa-shaped burial niches is closely related to the prevalence of the hell belief at the time, the sutra’s role in breaking through hell, the functional zoning, and the use of funerary stupas.