Аннотация:The soft and hard QCD processes are analyzed by the ATLAS and CMS experiments us
ing samples of proton-proton collisions collected by the LHC at √s = 7 and 8 TeV. Measurements of jet production rates, jet properties, particle multiplicity and particle momentum spectra are presented. The results are compared to predictions of theoretical models at leading and next to leading orders of QCD. The data are used to measure the strong coupling constant and for PDF constraints.