Abstract: The temperature effects of a super-long building under the seasonal descending temperature action are studied.Having selected the Second Long-Distance Telecom Hinge in Zhengzhou as the calculating example,the finite element method is used for calculation and analysis to the whole structural temperature effects.The characteristics of the whole structural deformation,the scope and the distribution of the internal force or stress of each kind components under such a seasonal descending temperature case have been provided.It has been demonstrated that the seasonal descending action is a kind of more disadvantageous temperature load.These results offer some references for engineers and designers to take the temperature action into reasonable structural disposal.