Everything in nature is contradictory, which is qualitatively described by the Chinese diagram  of the universe. The plurals in mathematics can quantitatively describe the contradiction- the insides of things are opposite and unified in mutual conversion. All the elementary particles (fermion and bosons) are different motions of the sample particle in complex space-time. The real part of physical quantity reflects the Feynman geometry of the particle (fermion) that is macroscopic and non-linear; the imaginary part represents the Lobachevsky geometry that is microscopic, linear and fluctuating (bosons). The real part of electromagnetic force satisfies Coulomb law, and its imaginary part meets Lorentz law. The real part of mass force satisfies Newton's law of universal gravitation, and its imaginary part meets Coriolis law. The real part of energy constitutes the macroscopical mass-energy equation of Einstein, and the imaginary part forms the Planck equation of microscopical quantum. The rest mass of electron and the charge are not in the same space, but satisfy the relationship between real and imaginary parts. The theory can explain the tests by Hao Ji, Jinsong Feng, Qi Liu, et al. It also shows that the charges with the same nature repulse each other, but attract each other with the different natures; on the contrary, the masses with the same nature attract each other. The theory can fundamentally solve the divergence in quantum field.