To get the behavior of cap-inclined-pile under horizontal load, we implemented the following steps firstly, the reasonable parameters of soil and pile were acquired according to fitted field observed data, and then the characteristics of deformation and force under different inclined degrees and tilt directions were analyzed through numerical simulation. The results show that horizontal bearing capacity doesn’t decrease in the conditions of three tilt directions and inclined degrees from 0% to 12%. In other words, the horizontal displacement of an inclined pile is less than that of a vertical pile. Moreover, the top of the pile is subject to the maximum positive moment, whereas the bottom of the pile is subject to negative moment and the inflection point is 8-9 m below the top of the pile. Finally, the distribution of moment on tilted piles and vertical piles is influenced by the tilt degree.