SixGe1-x is typical thermoelectric materials used for higher temperature as thermoelectric generator. Their property is dependent on their composition. Here different amount of fullerite or nanometer carbon tube as hollow quantum dot and hollow quantum wire were added into SixGe1-x. Their samples with different composition and the graded materials were fabricated by Hot Pressing method. The relations about thermoelectric property and the addition of fullerite or nanometer carbon tube and the microstructure were investigated in detail by normal measurement or analytical method.