Abstract: A new analysis model to consider the bending effect of the webs was proposed for cylindrical bending of sandwich structure with one dimension grid under temperature loads. It was supposed that the deformed webs in the core were perpendicular to the face sheets and there was no relative rotation between the two ends of the webs. Regarding the webs and the face sheets in the state of bending and thermal expansion as elastic beams, the equilibrium and the geometric equations were presented for a selected unit cell, and the relationship of force and displacement between neighbouring cells was established. The thermal deformation of the sandwich structures was predicted with the transfer matrix. As a numeric example, the effects of the geometric and the material parameters on the maximum deflections of the cantilever sandwich structure at free boundary were analyzed. The results are close to those with finite element method, which show the validity of the presented analysis model.