The results obtained in several Laboratories on the nuclear interaction of the K+-mesons of energy between 40 and 150 MeV have been analyzed. It is assumed that all K+-mesons have identical interaction properties and that Gell-Mann’s scheme is correct. The main results are the following: 1) The total cross-section for the process K++p (isotopic spin stateT=1) isσp=14±3 mb. The corresponding differential crosssection may be described essentially withS-wave and coulombian constructive interference. 2) The isotopic spin stateT=0 is not negligible compared toT=1.P-wave should be important in theT=0 state. 3) To explain the K+-meson interaction with nuclei, a nuclear repulsive potentialV ≃10 MeV should be added to the coulombian potential. With these assumptions we can describe:a) The elastic scattering in terms of the optical model.b) The inelastic scattering, by considering the interaction due to single collisions of the K+-mesons with the nucleons (which are considered as independent particles of a Fermi-gas). 4) The K+-nucleon interaction in theT=1 state may be described by a central potential equivalent to a hard-core of radiusa=0.8(ħ/mKc).