Clarifying the basic concept of smart grid is essential for the scientific and effective implementation of smart grids. The urgency and long-term concept of establishing a smart grid is critical to the continued healthy development of smart grids. Firstly, this paper summarizes the basic characteristics, main functions of the smart grid, and the basic concept of intelligent distributed architecture of smart grid based on our existing writings. On this basis, it points out some problems existing in the implementation of smart grids in China, and shows that it is necessary to further understand the true meaning of the urgency of smart grid implementation. Furthermore, the ability of the smart grid with intelligent distributed architecture to improve the resilience of the grid and resist the cyber attacks is discussed, thus strengthening the realistic significance of its implementation. Finally, from the perspective of the need to accept a high proportion of distributed renewable energy generation and the complexity of smart grids, the long-term nature of smart grid implementation is explained.