The paper presents some preliminary results of PSS performances measured by using various exciting sources.The energy resolution of 25eV for Mn Kα and of -15eV for Ti Kα is obtained.respectively,for various exciting sources,the satellite structure of Si Kα has been clearly observed.The peak of Cr Kβ and of Mn Kα in a stainless steel sample has also been resolved and the detectable amount of Ti has been less than 10^-9 g. The comparisons of these results attempt to find more suitable exciting source for a different application of PSS and to discuss the possibility of application carried out by PSS combined with a new μ-X-ray exciting source.