Abstract
Dwarf galaxies are the most numerous galactic systems in the Universe. Dwarfs in the Local Group(LG) are excellent laboratories in which to study galaxy evolution. Among the bright resolved stars in the LG dwarf galaxies, the strong emission line features in the spectrum of planetary nebulae (PNe) allow us to study the late evolutionary stages of stars with low and intermediate masses, as well as the star formation history and the chemical evolution of the galaxy, within the age range of 1 - 10 Gyr.