唐德宗时期,正值安史之乱刚刚平定,百废待兴。终其一生,德宗都在致力于“安内”削藩,希望恢复盛唐治世局面。即位之初,德宗采取了缓和与回纥及吐蕃的民族矛盾,全力施行“安内”政策。随着削藩的失败和民族关系的变化,为稳定唐朝边境,德宗的统治政策逐渐转变为“攘外”之策。但其“攘外”之策无不体现着“安内”的思想,而这一思想又为唐宪宗的削藩奠定了坚实的基础。 During the Tang Dezong period, just as Anshun’s chaos had just been settled, hundreds of things were to be set to rest. Throughout his life, Dezong is devoting himself to cutting the feudal clan in the hope of restoring the prosperity of the Tang Dynasty. At the beginning of the reign, Dezong adopted the policy of alleviating the ethnic conflicts between Hui and Tibet and fully implementing the “An-en” policy. With the defeat of the feudal clan and the change of the ethnic relations, in order to stabilize the border of the Tang Dynasty, Dezong’s dictatorship policy has gradually been transformed into a strategy of “foreign aggression”. However, the policy of “stabbing outside” embodies the idea of ​​“An Inner Mongolia”, and this thought lays a solid foundation for the revision of Tang Xianzong.