At this stage, China's research on blockchain is gradually deepening, and the number of patents even far exceeds that of western countries. However, with the continuous development and progress of blockchain technology, the problems in the blockchain system attack and prevention of blockchain become more and more obvious. Based on this background, this paper briefly describes the blockchain system, and puts forward scientific and feasible defense technology strategies for blockchain system attacks from data layer, network layer and application layer, hoping to contribute to the better development of blockchain in China. And it can more actively and effectively promote the improvement of China's blockchain system attack and prevention technology, and more effectively enhance China's overall economic strength, comprehensive national strength and international competitiveness.

Guorong Chen. Discussion on Blockchain System Attack and Defense Technology. Academic Journal of Computing & Information Science (2022), Vol. 5, Issue 2: 87-89. https://doi.org/10.25236/AJCIS.2022.050214.

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