20世纪70年代中越关系的变化出人意料,两国在短短的十年时间就从肝胆相照的兄弟变为不共戴天的敌人,促成这一剧变的诸多因素中,苏联因素不容忽视。苏联对第三世界政策的调整,导致其对越南政策的变化,在越南问题上由超然的脱身态度变为积极援助,中苏两国关于援越问题产生矛盾,越南出于自身国家利益考虑,推行有利于自身的倾向性政策,越南在中苏两国关系的天平上倒向了苏联一边。与此同时,苏联调整对社会主义阵营的政策,中苏关系破裂,从而影响中美关系走向,中美和解对中越关系产生诸多负面影响,两国关系交恶,矛盾冲突愈演愈烈,不断升级,最终导致中越处于全面紧张和严重对立状态,两国关系产生戏剧性变化。总之,苏联的全球性进攻战略政策对此期中越关系影响深远。 The changes in the relations between China and Vietnam in the 1970s came as a surprise. In two short decades, the two countries turned from a brother who belched their brains to an enemy who did not share a common destiny. Among the many factors that contributed to this drastic change, the Soviet Union can not be ignored. The Soviet Union’s adjustment of the policies of the third world led to changes in its policy towards Vietnam. In the Vietnam issue, it turned from a detached attitude toward a positive aid. The two countries have contradictions over the Vietnam aid issue. For its own national interests, In favor of its propensity to pursue its own policies, Viet Nam turned to the Soviet side on the balance of Sino-Soviet relations. At the same time, the Soviet Union has adjusted its policy on the socialist camp and the Sino-Soviet relations have been ruptured, thus affecting the trend of Sino-U.S. Relations. The Sino-U.S. Compromise has had many negative effects on the Sino-Vietnamese relations. The vicious relations between the two countries have intensified and the conflicts have been escalating and escalating, eventually leading to China and Vietnam are in full-scale tension and serious opposition and the relations between the two countries have undergone dramatic changes. In short, the Soviet Union’s global offensive and strategic policy has a far-reaching impact on the current Sino-Vietnamese relations.