固体氧化物电解池（SOEC）作为一种新的能源利用方式，可以将电能转化为化学能，具有高效、洁净、环保等优点。本文介绍了固体氧化物电解池的结构特点及其用于H2O/CO2的共电解制备H2和CO的工作原理，综述了固体氧化物电解池的组成形式，以及单片电解池和电解池堆用于H2O/CO2共电解反应的国内外研究进展，并阐述了提高固体氧化物电解池共电解效率所亟需解决的问题。

Solid oxide electrolysis cell (SOEC) as an environmental-friendly device can converse the electric energy into chemical energy with high efficiency. In this paper, the progress on structure and working principle of SOEC for co-electrolyzing steam and carbon dioxide to generate syngas were reviewed. The structure of SOEC, the recent development of high temperature steam/CO2 co-electrolysis from solid oxide single electrolysis cell and cell stack were also introduced. In addition, the improvement of structure and development of novel material for increasing the electrolysis efficiency of SOEC were put forward as well.