Globalization as the most powerful phenomenon of the present time is widely contested for its positive and negative outcomes. To Indonesian context, particularly to the Javanese, it brings more negative impacts than the advantages causing the decrease of primary school students' character as seen from their disobedient to be the observance of their own indigenous culture and ethics. The purpose of this research is to find out the impact of Javanese ethno-linguistics intervention to the character of primary school students. This research used qualitative method. There were 60 lower primary school students (class IV) taken as the subject of the study. They were from four Elementary schools at Central Java. The research had been conducted for three months. The data were collected through observation, interview and documentation. The data were triangulated and analyzed by using Miles and Huberman techniques. The results showed that after giving ethno-linguistic treatment for three months teaching the students through Javanese song, Geguritan (Javanese poems), macapat (Javanese hymne) and geguritan competitions, and various Javanese literacy activities, the students show positive changes of their characters. They show more appreciation to others; they love their indigenous heritage, have good manners, use kromo alus (the most polite style), and become more obedient to their parents. These results are so much different from their characters before the treatment. It can be concluded that the ethno-linguistic approach can improve students' characters.