By using the model of multi-photon nonlinear Compton scattering and numerical simulating method, the positive electron acceleration in the wake field of the sine triangulation extra- intense laser- plasma is studied, a new mechanism on the positive electron acceleration in the plasma wake field produced by the incident extra- intense laser and nonlinear Compton scattered light is given, and the revised formula and numberical simulation results on the positive electron acceleration energy are given out. The results show that the acceleration effect on the plasma wake field of the extra-intense laser pulse of non-symmetry sine triangle to the positive electron is better than the plasma wake field of the extra- intense laser pulse of symmetry sine triangle, the width of the coupling laser pulse of the non- symmetry sine triangle and the ratio of the pulse increasing length and decreasing length is decreased by Compton scattering, and the acceleration energy of the positive electron is clearly increased. The causes that acceleration energy in the laser propagation direction of the positive electron is increased are that the positive electron frequency increases, the anisotropic distribution of the transverse speed of the positive electron is increased and the acceleration energy in the transverse direction of the positive electron is limited by the wake field.