Abstract: Introduction To accelerate the construction of standby power dispatch systems at all levels control centers and improve the disaster recovery level of power dispatching, it is necessary to study the ubiquitous technical difficulties of homogeneous and heterogeneous architecture modes in the construction of the active and standby power dispatch systems in all regions of China. Method According to the construction principles of "synchronous operating, seamless handover" and "one-sided maintain and bilateral synchronization", the differences of products and the technical barricade between different manufacturers made significant divergence when it came to comparing homogeneous-architecture construction and heterogeneous-architecture construction. Result Basing on long-term work experience and deep understanding of the active and standby power dispatch system, this paper analyzes the main technical difficulties of the two kinds of construction modes, the technical key points have been summarized. With the help of key indicators such as security、reliability、construction complexity、maintenance workload、technical contribution、ROI and assets activity ratio, construction engineering evaluation and analysis of advantages and disadvantages have being given in this paper. Conclusion According to the conclusion of the research, some suggestions are put forward, which could provide some guidance for further construction decision concerning the standby power dispatch system in China.