This paper describes several types of oil-immersed air-cooled transformer, and then reviews the development process of the transformer cooling machine and their advantages and disadvantages, analyzes the development and usage of air-cooled oil-immersed transformer in China, and proposes to control cooling fan starting by oil temperature value.%本文首先介绍了油浸式风冷变压器的几种类型，然后回顾了各种变压器冷却机的发展历程和优缺点，并分析了油浸式风冷变压器在我国的发展使用情况，并且给出了用油温值控制冷却风机启动的建议。
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