苏州瑞光塔是南方地区宋代建筑研究的重要实例， 其建造时间为北宋景德元年至天圣八年(1004—1030)。不过，从瑞光塔现存建筑形制分析，其塔基、铺地、柱额、 铺作、天花、壸门样式等都存在后世维修的痕迹。通过整理瑞光塔的建造和维修历史，观察维修痕迹和构件叠压关系，梳理建造逻辑，可确定瑞光塔在两宋时期经过了北宋宣和和南宋淳熙两次较大规模的修缮工程，且两次修缮因出资者和修缮目的不同产生了修缮位置和修缮方式的差异。
Ruiguang Pagoda in Suzhou was built from the first year of the Jingde reign period to the eighth year of the Tiansheng reign period (i.e. 1004-1030) of Northern Song. However, the foundation, floors, columns, bracket sets, ceilings, and doors were repaired later on more than one occasion. Based upon a thorough analysis of the history of construction and restoration, and through observation of signs of repair and mutually pressing components at the actual building, the author suggests that Ruiguang Pagoda was repaired during the Xuanhe reign period of Northern Song and again during the Chunxi reign period of Southern Song. These two restorations differed in their content and methods, because they had difffferent sponsors and objectives of sponsorship.