▎ 摘　　要

In this article, the Dirac electron scattering problem on circular barrier of radius R is studied under the generalized uncertainty principle (GUP). The expressions of scattering coefficients, scattering cross-section and scattering efficiency of massless Dirac particle are obtained by solving the massless Dirac equation under GUP and discussed by numerical methods. It shows that the scattering coefficient, the scattering cross-section, and the scattering efficiency depend explicitly on the GUP parameter a. For the scattering coefficient R-l, GUP may cause slight shift in the oscillation position of vertical bar R-l vertical bar(2) and make some peaks value of vertical bar R-l vertical bar(2) smaller. For scattering cross-section and scattering efficiency, GUP may also lead to slight shift in their oscillation position and increase of amplitude when the GUP parameter increases.