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为拓宽涡旋压缩机在低温热泵领域的应用，主要采用了几种技术手段。本文综述了涡旋压缩机在热泵系统中的几种发展趋势,即设置补气回路和经济器；结合制冷剂泄出技术和喷射技术对压缩机容量进行调节以及在压缩机上设置多个排气阀并将排气压力制冷剂引入背压腔；同时介绍了其技术原理和主要需要解决的技术问题，提高了涡旋压缩机的效率。Some new technical methods are developed in order to increase the running scope of scroll compression heat pump systems. The most popular three ones are introduced in this article. They are 1) how to establish a heat pump sys-tem with economizer and auxiliary injection circuit; 2) how to adjust the system capacity through refrigerant release and injection; 3) how to get variable volume ratio by designing three discharge valves. The principles of these methods and solving technical problems are introduced and the scroll compressor efficiency has been improved.