In this study, crystal structures and magnetic properties of as-ast, annealed and rapidly solidified Mn-A1-M( M=Cu, Fe) alloys have been investigated. In $Mn_{0.56}Al_{0.44}$ alloys, the largest fraction of $ au$ phase and values of magnetic properties was obtained in Mnl, i6Alo or alloy. And this alloy was used as the basic composition. In $Mn_{0.56-X}M_{X}Al_{0.44}$ alloys, when annealed, $ au$- and $eta$-Mn phase appeared at x< 0.08, $ au$- and $kappa$ phase at 0.10 $leq x leq$ 0.12 and $kappa$- phase only at 0.15 $leq x leq$0.20 . When rapidly solidified, specimens showed similar phases as when annealed except that $varepsilon$ phase appeared at x=0.04. In Mnu FexAlo 44 alloys, asyast specimens showed $ au$-, $eta$-Mn and $gamma_2$- phase at x<0.08 and K and $eta$-Mn phase at x>0.10. When rapidly solidified, Mn-Fe-Al specimens showed $varepsilon$-, $gamma_2$- and small amount of $ au$- and $kappa$ phase at x<0.08 and $kappa$- phase only at 0.$leq x leq$0.20. All the alloys investigated were ferromagnetic. The Curie temperature of annealed specimens and rapidly solidified of Mno 5sAlu 44 alloy were -650K and -644K. Spontaneous magnetization( UII of annealed and rapidly solidified specimens were 40-45 (emu/g) and 50-52(emu/g), respectively. Remanent (M,) to saturation magnetization( Ms) ratio was -0.7. M, of rapidly solidified specimen was about 48(emu/g). Magnetic properties of $Mn_{0.56}Al_{0.44}$ alloys were found to be determined by the relative fraction of ferromagnetic r- and K- phase. When M= Cu and x=0.15, maximum as($sigma_{0.0}$) was obtained by about 64.3 emu/g), and when M=Fe and x=0.15, 66.4( emu/g). The Curie temperature decreased as x increased.