本文根据观测数据,找到了既适用于大陆板块也适用于海洋板块的统一经验性运动规律:板块的运动速度U正比于几何参数T_d(有效洋脊长度与海沟长度之和除以大陆面积与下沉条带两侧表面积之和)。根据这一经验规律,简化的力学分析表明,板块运动的驱动力来源于洋脊的推力和下沉条带的拉力,阻力主要为作用于板块大陆部分底面和下沉条带两侧面的粘性力。 Based on the observed data, we find the uniform empirical law of motion applicable to both continental and oceanic plates: the velocity of the plate U is proportional to the geometric parameter T_d (the sum of the effective ridge length and the trench length divided by the area under the continental shelf Shen strip both sides of the surface area). According to this rule of thumb, the simplified mechanics analysis shows that the driving force of the plate movement comes from the thrust of the ridge and the pulling force of the sinking strip. The resistance is mainly the viscous force acting on both sides of the continental part and the sinking strip of the plate.