从办公建筑的热舒适出发，说明了改善窗际热环境的必要性。指出除通过建筑构造来改善环境外，空调分内外区是常用的手法，但会带来能量混合损失。介绍了一些可以不设外区空调系统而又能改善窗际热环境的空调措施。 Starting from the thermal comfort of office buildings, the necessity of improving the thermal environment in the window is illustrated. It was pointed out that in addition to improving the environment through building construction, air conditioning inside and outside the area is a commonly used method, but it will bring about energy mixing losses. Introduced some air-conditioning measures that can improve the thermal environment of the window without external air-conditioning system.