The main doctrine is Ogen Ni-eko (Oso-eko・Genso-eko), as constituted from the name of Hongwan (by Amidanyorai), which was extracted from Kenjodoshinjitsukyogyoshomonrui (Kyogyoshinsho) based on Muryoju-kyo Bussetsu Muryoju-kyo Sutra by the founder of the sect, St. Shinran.
宗祖親鸞聖人が、無量寿経仏説無量寿経に基づいて、顕浄土真実教行証文類（教行信証）を撰述して開顕した（阿弥陀如来の）本願の名号を体とする往還二廻向（往相回向・還相廻向）を要旨とする。