A pellet press machine, comprises a die block assembly for receiving powder to be compacted, and a press assembly for compacting the powder, the die block assembly laterally movable along a linear horizontal axis between the filling location at which an array of dies are filled with the powder to be pressed at the pressing location in which the powder in dies is pressed to form pellets. The filling assembly includes an auger driving by a motor to force the powder directly into dies. The auger further has a sharp edge sits right above the dies to force the powder directly into dies and the sharp edge scrapes the top surface of the dies so as to allow the high degree accuracy of filling dose for each die. With this filling assembly, the pellet press machine can product high density and small diameter pellet with high density and sticky density powder.