NOVELTY - An aromatic polyester film comprises cyclic carbodiimide compound having carbodiimide group in ring structure and has at least one cyclic structure in which the primary nitrogen and secondary nitrogen of carbodiimide group are bonded by a bonding group in molecule or ketenimine compound, fineparticles and aromatic polyester resin. The amount of cyclic carbodiimide compound or ketenimine compound in the aromatic polyester film is 0.1-5 %mass with respect to the total amount of aromatic polyester resin. The particle size of fine particles is 0.1-10 mu m.    USE - Aromatic polyester film is used for laminated film for backsheet of solar cell module (all claimed).    ADVANTAGE - The aromatic polyester film has excellent hydrolysis resistance and favorable adhesiveness with solar cell panel, and cutting waste does not generate at the time of cutting.    DETAILED DESCRIPTION - An aromatic polyester film comprises cyclic carbodiimide compound having carbodiimide group in the ring structure and has at least one cyclic structure in which the primary nitrogen and secondary nitrogen of carbodiimide group are bonded by a bonding group, in molecule or ketenimine compound, fineparticles and aromatic polyester resin. The amount of cyclic carbodiimide compound or ketenimine compound in the aromatic polyester film is 0.1-5 %mass with respect to the total amount of aromatic polyester resin. The particle size of fine particles is 0.1-10 mu m. The content of fine particles in the aromatic polyester film is 1-10 %mass with respect to the total amount of aromatic polyester resin. A portion of fine particles is aggregated with aggregation rate of 10-50%. INDEPENDENT CLAIMS are included for the following:    (1) laminated film, which has 2-8 layers containing aromatic polyester film; and    (2) manufacture of aromatic polyester film, which involves preparing master pellet by mixing aromatic polyester resin and fineparticles, extruding master pellet and aromatic polyester pellet by casting, forming film on cooling roll from mold, and mixing cyclic carbodiimide compound or ketenimine compound. The master pellet is prepared by mixing aromatic polyester resin and fineparticles with screw rotational torque by giving fluctuation of 0.1-10% to screw rotational torque.