This research objection is to study about family structure, the internal relationship, belief, religious, marriage, socialization, education, inheritance, social contact and communication with mainland China, the social relation to family name group and family structure changes and so on which is researched by an anthropology methodology and collect datas or information by random interviewing from 43 families. Moreover, another 6 families case study was interviewed by the in depth interview method and interview other persons in the outstanding institutions. The results are shown as this following. 1. Almost all Thai-Chinese family structure is a nuclear family from the first to second generation 2. The Patrilineal descent still exists. That is husband has an authority but not the highest. 3. The unique idea for the first son who has to be an inherit dexcendant is becoming decrease. 4. The inherit allocation in family is equal both women and men together with education that make women status does not differ from men at all. 5. Language culture is being decrease since the second generation and trends to be vanished in the third generation. 6. The community is a heterogeneity characteristic that always meet in community. 7. Contaction with the former mainland culture or family name groups can not find at present. 8. The traditional behavior of Thai-Chinese ethic group in the second generation is being decrease and trends to be disappeared in the third generation exception for the Chinese new year day. 9. Chinese-Thai ethic group still belive unchangeable in Chinese shrine belief while Buddism religious is extremely influence in community because of the cooperation between temple and Chinese temple commitees and Thai-Chinese ethic group behavior as Thai culture. 10. The Chinese communication is crucial for the economic institutions where is the representative to distribute and widespread the member commodities in foreign countries by internet.
