Abstract: Magnetic skyrmions are particle-like spin structures protected by their topology. So far, they have been observed in many magnetic materials or magnetic structures where inversion symmetry is broken. Their topological properties have been revealed via the topological Hall effect, topological spin dynamics, topological annihilation, and so forth. An extremely efficient coupling between the skyrmions and charge current has also been reported, making magnetic skyrmions one of the most promising candidates for future spintronics applications.