In previous study, the shapes of proton and neutron were drawn, and their masses were calculated by Q-theory. Proton of 938.3 MeV is composed of two up quarks of 2.251 MeV, one down quark of 4.760 MeV, one strong particle force of 42.78 keV and 1.0150 times dark force, and one electromagnetic particle force of 920.6 eV and 1.1116 times dark force. The strong particle force holds the two up quarks of proton. Because of this, when proton collides, the down quark falls off from proton. This is K-meson, and its mass was calculated as 495.05 MeV which is similar to the average of K± 493.67 MeV and K0 497.65 MeV. Since the structure is unstable, the strong particle force oscillates dimensionally. This is π-meson, and its mass was calculated as 137.79 MeV which is similar to the average of π0 134.98 MeV and π± 139.57 MeV. Finally, the electromagnetic particle force also becomes unstable, so π-meson collapses. In the combination of unstable particles, the strong and electromagnetic forces undergo an oscillation with varying intensities, so hadron particles have non-standard masses. In this study, various combinations of oscillating masses have been tried, but a general rule has not yet been found.