中文摘要：

本文在创建行星会合指数（K）运动学方程，并获得太阳绕太阳系质心绕转具有约22年周期的基础上，试从行星摄动对地球轨道偏心率（P）影响出发，分析了行星系统中对地球引力最大的地外行星一木星和引力其次的地内行星一金星的轨道拱线与地球轨道拱线的会合周期，发现木星可造成e具有40万年周期性变化，而金星可造成e具有10万年周期性变化．

英文摘要：

On the basis of the planetary synodic index （K） the kinematics equation and the cycle of approximately 22 years d Sun to circle solar system center of mass revolution, this paper discussed the influence of planetary perturbation on Earth＇s orbital eccentricity （e）, and analysed the synodic periods of the orbit arches lines for the Earth with the Jupiter and the Venus. The Jupiter has the greatest gravity to the Earth and can lead to evariafion of 400,000 years cycle. The Venus gravity to the Earth is less than the Jupiter＇s and can result in a 100,000 years periodic changes of e.