This research examines the migration of Javanese language and its influence on Sundanese language Pangandaran dialect, in West Java Province, Indonesia, which with the study is geolinguistic. The approaches used in this research are theoretical approach and methodological approach. Theoritically, the approach used in this research is the diactology research. As for methodology, the method used in this research is the qualitative-descriptive method. This study starts with provision data done through the conversation (cakap) and observation (simak) method. The data is the language in system of existing kinship, the pronouns, and the body parts which is collected by using the vocabulary basic list method (Swadesh list). The data is analyzed by using the comparative-synchronic method. This research was carried out in Pangandaran Regency, by selecting five districts as observation area which determined based on the direction of the wind. The districts are Cimerak District, Sidamulih District, Kalipuncang District, Padaherang District, and Pangandaran District. The research results show that (1) there is traces of language migration and the influence of Javanese language in Pangandaran, West Java, Indonesia, which can be seen from the existence of the same glosses and etymons; (2) pattern of Javanese language migration through the wave theory with centrifugal pattern (away from the unity and standardization); (3) the determinants of Javanese language migration are historical factors, geographical-demographic factors, and political factors.