Abstract: From late Berne period to Frankfurt period, the philosophical thought of young Hegel gradually shifts its emphasis on Kant and Fichte's philosophy of subject to philosophy of unity under the influence of Schiller. In the context of this transition, to seek the origin of the alienation in the western world, and to find the way of overcoming the alienation, he had a long and persistent study of the spirit and fate of the Jews. During this process, Hegel not only exclusively concludes that Abraham was the real founder of the Jewish spirit, but also applies the philosophy of subject of Kant and Fichte to the interpretation of the origin and essence of Judaism, thus realizes the subjective and humanistic refomation of Judaism. On the other hand, the reception of Schiller's aethetics leads to his negation of the subjective spirit of the Jews, and find out a way to overcome the modern alienation through Greek spirit of love and beauty.