Apparatus for the filling with horti-fructural loose products of each of a plurality in series of containers or small boxes, and comprising: - at least one transporting conveyor moving on an horizontal plane with a motion on a closed path, - at least a moving structure arranged at the output edge of said conveyor, and provided with displacement and engaging means able of oscillating in an articulated way said container from: » a first raised position wherein the plane of the loading aperture of said container is inclined, at a maximum pre-defined angle, with respect to the plane of said conveyor, said loading aperture maintained contiguous to said output edge of said transporting conveyor, » to successive working positions wherein said container takes progressively less inclined positions, until the horizontal position of said loading aperture, - wherein said conveyor, in said inclined positions of said container, is able of moving forward to said container so that, by gravity, said horti-fructural loose products fall into said container, where said moving structure comprises: - an oscillating frame, substantially shaped as an "U", whose open side is apt of being placed in front of said output edge of said transporting conveyor, characterized in that said moving structure further comprises: - blocking means (12, 13) arranged at opposite internal sides of said oscillating frame and able of selectively engaging and disengaging the outer perimeter of said container, - said blocking means (12, 13) being arranged, at least partially, around and into contact to said outer perimeter of said container when engaging said outer perimeter. - at least one transporting conveyor moving on an horizontal plane with a motion on a closed path, - at least a moving structure arranged at the output edge of said conveyor, and provided with displacement and engaging means able of oscillating in an articulated way said container from: » a first raised position wherein the plane of the loading aperture of said container is inclined, at a maximum pre-defined angle, with respect to the plane of said conveyor, said loading aperture maintained contiguous to said output edge of said transporting conveyor, » to successive working positions wherein said container takes progressively less inclined positions, until the horizontal position of said loading aperture, » a first raised position wherein the plane of the loading aperture of said container is inclined, at a maximum pre-defined angle, with respect to the plane of said conveyor, said loading aperture maintained contiguous to said output edge of said transporting conveyor, » to successive working positions wherein said container takes progressively less inclined positions, until the horizontal position of said loading aperture, - wherein said conveyor, in said inclined positions of said container, is able of moving forward to said container so that, by gravity, said horti-fructural loose products fall into said container, where said moving structure comprises: - an oscillating frame, substantially shaped as an "U", whose open side is apt of being placed in front of said output edge of said transporting conveyor, characterized in that said moving structure further comprises: - blocking means (12, 13) arranged at opposite internal sides of said oscillating frame and able of selectively engaging and disengaging the outer perimeter of said container, - said blocking means (12, 13) being arranged, at least partially, around and into contact to said outer perimeter of said container when engaging said outer perimeter. - an oscillating frame, substantially shaped as an "U", whose open side is apt of being placed in front of said output edge of said transporting conveyor, characterized in that said moving structure further comprises: - blocking means (12, 13) arranged at opposite internal sides of said oscillating frame and able of selectively engaging and disengaging the outer perimeter of said container, - said blocking means (12, 13) being arranged, at least partially, around and into contact to said outer perimeter of said container when engaging said outer perimeter.