Abstract:The observation of cosmic rays and indirect detection of dark matter particles are two important topics in high-energy astrophysics. In 1912, V. Hess discovered the cosmic rays. Since then, the observation of cosmic rays has lasted for more than a century. Traditional theories suggest that the cosmic-ray flux follows a single power-law below the so called ``knee' at a few PeV energies. Recent measurements of cosmic-ray proton flux from space-based observatories and balloon-borne experiments have revealed some unexpected structures in the energy range of 10 GeV--100 TeV, which provided important clues for the study of the origin, propagation, and acceleration mechanism of galactic cosmic rays. On the other hand, thanks to the improvement of observational accuracy and the extending of observational energy range for cosmic-rays and gamma-rays, the indirect detection of dark matter particles (DM) has attracted more and more attentions in the past few years. DM annihilation/decay may produce $e^{\pm}$, protons, and anti-protons, gamma-rays, or neutrinos, which can potentially lead to observable signals in cosmic-rays or gamma-rays.