从多方面概述了干热岩（hot dry rock，HDR）的特点以及开发利用技术，详细介绍了二氧化碳开发干热岩技术，详细对比了二氧化碳开发干热岩与传统开发技术。2种技术各有优劣，但在高效和环保角度方面分析二氧化碳开发地热能更胜一筹。二氧化碳开发干热岩具有特殊的优越性，也是CCUS（carbon capture，utilization and storage）技术的扩展，对缓解能源匮乏和治理环境污染具有重要意义。

Geothermal energy is a huge renewable energy source on the earth,of which dry-hot rock type geothermal energy has the most development potential due to its high heat and large reserves.Firstly,the features and the development and utilization technologies of hot dry rock are summarized in many aspects,and then the development technology of hot dry rock by means of carbon dioxide is introduced in detail.Finally,the carbon dioxide-routing development technology is compared minutely with the traditional development technology.Both technologies have pros and cons,but the carbon dioxide-routing technology is superior in terms of efficiency and environmental protection.The carbon dioxide-routing hot dry rock development technology has its special advantages and it is also an extension of CCUS technology,which is of great significance for relieving energy scarcity and controlling environmental pollution.