The nuclear impaction spectra of neon, helium-neon and helium-neon-argon mixtures at different compositions and pressures are measured. Based on themeasurement, the influence of pressure of neon, helium and argon on the intensity of Ne 585.2 nm and the efficiency of filling of ten 2P levels of Ne is summarized by calculating the radiation rate I, the relative populations N and the filling rate W of ten 2P levels of Ne.