A new differential operator Fm;p;q;s;l;α;β;λ (α1) is introduced for functions of the form f(z) = z-p +∞Σk=n akzk which are meromorphic in the punctured unit disc U* :={z C : 0 < |z| < 1}. We introduce the class фmp (α1; α;β; λ;l;η) of meromorphically functions that generalize and extend many classes previously studied by different authors, and the main object of this paper is to investigate various important properties and characteristics for this class. In addition, we proved that a special property is preserved by some integral operators.