2017 was a year of great change for Saudi Arabia. Since June, King Salman Ritsuko, Salman and his son respectively as king and Crown Prince, the succession of the throne has changed significantly, Saudi Arabia ushered in the "Salman Dynasty", the end of its founding has always been implemented in the brother and the throne succession system. Under the leadership of the new crown Prince Muhammad Ben Saleman, Saudi Arabia has vigorously implemented the "2030 Vision" plan, the economic and social reform went into a new stage, the Saudi Arabia changed from "conservative and single" to "moderate and diversification" of the new era. In November, the so-called anti-corruption storm pushed Saudi Arabia to the forefront of international opinion. But in general, the reform wave of Saudi Arabia is full of uncertain factors, this paper intends to take the issue of the succession of the Saudi throne, from the aspects of political, economic and social fields, analyzes Saudi political and economic reform and its prospects in recent two years. <<