An apparatus and method for inflating a casing enclosing a sausage stick is disclosed, wherein the apparatus includes a holder configured to receive the sausage stick enclosed in the casing and move together with the sausage stick thereby received from an inflation starting position to an inflation end position, and an inflating needle configured to penetrate the casing of the sausage stick received by the holder and to follow the holder immoveably relative to the holder moving together with the sausage stick from the inflation starting position to the inflation end position to inflate the casing between the inflation starting position and the inflation end position.