Abstract: This thesis discusses about Deng Xiaoping's ideologies on the reform of the socialist political system from those aspects such as the system's self-improvement and development, the purpose, principles, methods, assessment and the general or ientation of the reform. It points out that Deng Xiaoping's ideologies on the reform of the socialist political system have formed a complete system and have been concluded on the basis of the practical experiences of the long-term leadership of the China Communist Party on the construction of the people's democratic politics. It is necessary that those ideologies be studied, preserved, applied and developed under today's new social circumstances.