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The conjecture of Antimatter was first proposed by Schuster in 1889. In 1928, Dirac and others gave theoretical predictions in the equation. After four years, Anderson formally observed antiparticles through experiments. In this paper, we review the antimatter universe model, and sort out the origin of baryons and the matter-antimatter asymmetry. We also outline the main research directions in the field of antimatter, such as matter-antimatter symmetry violation and antimatter inside protons. For those unsolved issues, especially like the ratio of matter to antimatter in the universe, the baryon generation model, the gravitational behavior of antimatter is also summarized. In terms of practical applications, we have summarized some technologies related to antimatter, mainly applied as PET and CT (positron emission tomography and computer tomography), etc.
Lian et al. (Wed,) studied this question.