The results of bilingual language contact, language use either language switch. Resurrection of which words are important qualities of language contact relatives. Modern Kyrgyz language and Uyghur language produced in the language of competition in contact, causing the result of pure language, that is, to use the old words new phenomenon. Such phenomena as the old words new language with fierce competition and more obvious. Proved that the change process of language development among language elements need to dig their own history or relatives language components to enrich the language and therefore active language vitality.