Is the children's academic achievement impacted by the socioeconomic status, the cultural capital of family, the education aspiration? The same issues have been studied before, but their samples focused on the junior or senior school students. However, our purpose of this study is to explore the relationships among the socioeconomic status, the cultural capital of family, the education aspiration, and academic achievement in KeeLun's primary education (1 grade) students. There are 616 samples in this study. By using the Structural Equation Modeling to test, the research results are as follows: the education aspiration for children is significantly and positively impacted on the cultural capital of family, but the socioeconomic status are not. Also academic achievement is significantly and positively influenced by the socioeconomic status, the cultural capital of family, and education aspiration. From these results, some suggestions were given.