The Influence of Compton scattering on modulation instability of elliptical polarized laser in plasma is studied using the relativistic theory and the model of multi-photon nonlinear Compton scattering，the temporal growth rate revised equations of modulation instability are given out，and it is simulated numerically.The results show that compared with before the scattering,the increments of the maximum temporal growth rate of modulation instability are greater as the Compton scattering light is stronger.Near the critical surface of laser plasma，the increments of the maximum temporal growth rate of modulation instability formed by scattering light accelerate the collapsing of the laser field.