The p-type semiconductor <TEX>$Bi_2Te_3-Sb_2Te_3$</TEX> thermoelectric materials were fabricated by melting, milling and sintering process and their thermoelectric properties were characterized. The compound materials were ball-milled with milling time and the powders were sintered by spark plasma sintering process. The ball milled powders had equiaxial shape and approedmately <TEX>$1\~3{\mu}m$</TEX> in size. The figure of meritz of sintered thermoelectric materials decreased with milling time because of lowered electrical resistivity. The thermoelectric properties of <TEX>$Bi_2Te_3-Sb_2Te_3$</TEX> materials have been discussed in terms of electrical property with ball mill process.