This study is to understand Chinese Americans' assimilation through a novel entitled The Joy Luck Club. This analysis uses Wei Bai’s theory of assimilation. Assimilation is commonly viewed as boundary reduction caused by encounters between members of two or more societies or groups with different cultural backgrounds. This study also discusses the types of assimilation and the extent to which assimilation did based on the measurement of assimilation.
This analysis uses qualitative research that obtained with description, explanation, and interpretation the sentences, dialogues, and monologues. In this case, the type of qualitative research would be used to analyze Waverly Jong as the one of Chinese American characters in The Joy Luck Club novel.
This study found two (2) types of assimilation, namely Straight-Line Assimilation and Segmented Assimilation. In Straight-Line assimilation, there was Straight-Line assimilation in Chinese values such as divorce and Straight-Line assimilation in Chinese norms such as cohabitation. In addition, in Segmented assimilation there are Segmented assimilation in the value of education such as going to the same schools with natives, and Segmented assimilation in value of hard work when the characters participated in chess tournaments.
Meanwhile, in the measurement of assimilation the study found Interracial Marriage, because the characters who was Chinese married a Caucassin man, which means that the characters was perfectly assimilated.

Keywords: Straight-Line Assimilation, Segmented Assimilation, Interracial Marriage