An Sb-Te based alloy powder for sintering, characterized in that it is prepared by providing a gas-atomized powder of an Sb-Te based alloy and further subjecting the powder to mechanical pulverization and has a maximum particle diameter of 90 [mu]m or less, a sintered sputtering target prepared by sintering the above powder, and a method for preparing an Sb-Te based alloy powder for sintering, characterized in that an Sb-Te based alloy is dissolved, an atomized powder is prepared by gas atomization, and the resultant powder is subjected to the mechanical pulverization in an inert gas without the exposure to the atmosphere, to thereby prepare a powder having a maximum particle diameter of 90 [mu]m or less and being reduced in the content of oxygen. The above method allows the preparation of a sputtering target having a uniform and fine structure, resulting in the inhibition of the occurrence of a crack in sintered target and also of the arcing during sputtering and in the reduction of irregularities of the surface due to the sputter erosion, which leads to the preparation of an Sb-Te based alloy sputtering target having good quality.