As an outstanding Marxist historian, Mr. Zhao Lisheng holds persistent but not doctrinaire belief in Marxism throughout his life. On the basis of improving awareness of Marxist theories, he deepens his understanding of Marxist theories and restoring the knowledge structure of Marxist theories to free himself of bigotry, which reflects the stand and mind of a real Marxist. Zhao applies the methodology of class analysis in historical studies, which is largely related to his humanistic care of the suffering people as well as great emotion for his home country. That should be the psychological and emotional foundation of his belief in Marxism. Although he does not specialize in the studies of the Song dynasty, Mr. Zhao owns insightful and profound understanding of the local force in this period, and even the overall condition and mainstream phenomenon in the social development in the Song dynasty.