Combining with relevant codes requirements,this paper researched the large span portal frame design,elaborated the problems to pay attention in design,and from the design specification selection,load value,node design,column design,material requirements and other aspects made introductions,in order to ensure the design rationality.%结合相关规范要求，对大跨度门式刚架的设计进行了研究，阐述了其在设计时应注意的问题，并从设计规范选取、荷载取值、节点设计、柱脚设计、材质要求等角度作了说明，以保证设计的合理性。
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