Our society needs talents that excel in English-Chinese translation and English education. However, there is not yet a unified and scientific evaluation index system (EIS) for the employment quality of graduates from English department of colleges. Very few scholars have analyzed the difference between English majors in employment ability. Therefore, this paper decides to analyze the difference between English majors in employment ability, and evaluate their employment quality. Firstly, an EIS was constructed to evaluate and predict the employment quality of English majors in colleges. Secondly, the relevant indices were selected and analyzed in turn. Thirdly, an employment quality prediction model was constructed for English majors in colleges. The proposed EIS and model were proved effective through experiments.