To investigate the penetration mechanism of jacking opened and closed pipe pile in the clayey soil, combined with particle flow numerical simulation software in dealing with the advantage of the large deformation and nonlinear problem, considering the contact adhesive model to simulate the superiority of clayey soil and clayey soil is established in the static pressure open mouths discrete element numerical model of pipe pile, realizes the continuous penetration process of static pressure pile. The distribution characteristics of jacking force, pile end resistance and pile side friction resistance along with penetration depth are discussed. The movement law of soil around the static pressure open closed pipe pile is compared and analyzed. The test results show that the size of the jacking force is related to the pile diameter, the larger the pile diameter, the greater the jacking force. The lateral friction of the pile is gradually exerted with the increase of penetration depth, and there is an obvious degradation effect. The variation range of the lateral friction of the open pipe pile is 50~ 100mm, and the soil plug height is about 3.5d. The numerical simulation results are compared with the laboratory test results, and the results are consistent. The research results can provide reference for the study of the penetration mechanism of opened and closed jacked pile.