Based on Bohr’s model of hydrogen atom, the main purpose of this paper is to propose a new hypothesis for the model of hydrogen atom and perform mathematical calculations and verifications using experimental values and physical constants. The new model can not only provide the explanations that the existing theories failed to provide, but also can be used to construct neutrons, atomic nuclei, and individual atoms and molecules by involving only electrons and protons and their interactions. This means we only need to know how single electron and proton interact with each other, then we can establish a full model of hydrogen atom, and then we can establish other atomic nuclei. After all, all matter in the universe is made from hydrogen atoms through nuclear fusion.
