Ergong language, also known as Stau or Hor language, is one of the Tibeto-Burman languages spoken in the western part of Sichuan and the upper reaches of the Dadu River. This paper focuses on the Rangtang County dialectal region of Ergong language in the northern “Jiarong group” to introduce the basic situation of the kinship terms in Rangtang County’s Ergong language. It is pointed out that the kinship term system in this dialectal region can be divided into five levels, including ancestor, father, self, child, and grandchild. The analysis from the aspect of word formation shows that there are distinctions in terms of age, gender, and other aspects in the semantic elements, semantic positions, and semantic combinations of this language. Finally, the deep-seated conceptual consciousness of this ethnic group, which includes a focus on the status of the core family, harmonious kinship relationships, gender differences, and the combination of “close to close,” is extracted from the language. These deep-seated consciousnesses embedded in kinship relations constitute people’s entire cognitive world.