At the request of the authors, the article titled “The Mechanical Performance of Shear Key of Immersed Tube Tunnel with Differential Foundation Settlement” [1] has been retracted. The authors found that there was an error in the method used for the data processing as temperature change was not considered, and the results were inconsistent with those in the thesis of Bin ShengLin [2], who was acknowledged in the article. Thus, the accuracy of the reported data and the conclusions of this article are not reliable.