In order to investigate the influence of soil strength at end of pile on bearing capacity of super-long piles, three kinds of super-long piles with different lengths were established. By changing the strength of soil at end of pile, the transfer of axial force along the pile body, the influence of pile lateral friction resistance and the deformation of pile were studied. The influence of soil strength on the lateral friction of the upper and lower sections of super-long piles was analyzed. The results show that, the ultimate bearing capacity of super-long pile is improved from 7.06% to 22.49%, when the soil strength of pile tip is increased by 1 to 2 times. When the 80 m foundation pile with five different length to diameter ratios, the ultimate bearing capacity increases from 35.06% to 63.21%, when the length increases from 25% to 50%. Under the same load, the lateral friction of pile with strong soil at end of pile is less than that of pile with weak soil. End-resistance strengthening effect also exists in the weak soil layer. The strengthening effect will increase with the decreasing of length to diameter ratio. The numerical simulation results can provide reference for the design and bearing capacity estimation of super-long diameter pile foundation.