Abstract: Close-coupling calculations for the interaction between low-energy electron and atomic oxygen are carried out by using R-matrix method.Total photodetachment cross sections of negative atomic oxygen ion together with main contribution of the individual ionization channels to the partial cross sections are illustrated at the photon energy ranging from the threshold to 7 eV.Comparison is made between the present results and the former experimental and theoretical results.Elastic cross sections of low-energy electron scattering from the atomic oxygen are also given to compare with other experimental and theoretical results.