Abstract: Based on the nuclear reaction models and the experimental data of proton reaction cross sections, energy spectra and elastic scattering angular distributions of ⁵⁸Ni, all kinds of cross sections, energy spectra, and the double differential cross sections of neutrons, protons, alpha, deuterons, tritons and helium emissions are calculated and analyzed for ⁵⁸Ni(p,x) reaction at incident proton energies below 200 MeV with the large calculation code MEND developed previously by the authors. The theoretical frames of MEND are spherical optical model, intranuclear cascade model, preequilibrium emission theory based on exciton model, evaporation model and HauserFeshbach statistical theory with width fluctuation correction. The optical potential parameters are searched automatically with the code APMN to fit the experimental data of reaction cross sections and elastic scattering angular distributions of p+⁵⁸Ni reaction. Based on the energy spectra results calculated with the code MEND and the Kalbach systematic formulae, the double differential cross sections of particle emission are obtained. Theoretical calculation results are compared with existing experimental data and with the results of the evaluated ENDF/B6 file. As a whole, theoretical calculation results agree with the experimental data. Compared with the ENDF/B6 file, calculations of ³He are considered and the energy region is extended up to 200 MeV.