Abstarct: The strong nuclear interaction does not depend on the electric charge. It seemes natural to assume that the nuclear introduction could be associated with the presence of special nucleon charge g in nucleons, and a harmonic oscillator (H.O.) for confinement. Getting a correct treatment, we consider the exchange of spin zero particles, the spin zero particle like - meson field with harmonic oscillator potential interacts with nucleon through the Kelein – Gordon Fok equation (K.G.F). In this model, we can find the known strong nuclear interaction. Hence harmonic oscillator potential is a confinement potential, causes each nucleon surrounded by a cloud of mesons.