Xinggongjie station on Line 1 of Dalian Metro is a columnfree largespan mined Metro station, which has many advantages. In the paper, the architectural design, structural design, pipeline design and decoration design of Xinggongjie station are presented, the characteristics of the design are analyzed, the pros and cons of the columnfree largespan mined Metro station are summarized. The paper can provide a new concept for the design of other Metro stations in the future.