In order to solve the problem of peak load regulation in winter and new energy consumption in China, zero-output technology of low-pressure cylinder was proposed. On the basis of studying a large number of literature materials, this paper briefly introduced the application scenario and technical principle of low-pressure cylinder zero-output technology, and discussed the theoretical research and application of low-pressure cylinder zero-output technology in practical engineering. As a kind of power plant operation scheme, low-pressure cylinder zero-output technology has the characteristics of significant peak regulation capability, low reconstruction cost and high economy. Although this scheme has a very broad development prospect, there are still many practical problems to be solved urgently if we want to promote its application.