在水平井管柱屈曲临界力和屈曲后管柱与井壁的接触力这两方面研究中存在着不同的结论。本文对理论和试验的不同结论进行了分析，指出产生这种不同结论的原因，一是推导方法不同，二是试验条件不规范。认为有关这方面的研究有必要在理论、试验和现场三者结合下，建立科学计算方法，以便得到更正确的结论。 There are different conclusions in the studies on the critical stress of horizontal well tubular buckling and the contact force between the column and the well wall after buckling. This paper analyzes the different conclusions of theory and experiment and points out the reasons for the different conclusions. The first one is the different derivation method and the second one is the non-standard test condition. It is considered that there is a need for the research in this field to establish a scientific method of calculation based on the combination of theory, experiment and field so as to get a more correct conclusion.