Bed duvet covering and fixing kit, comprising: - a plurality of fastening means (104a,... 104n), each fastening means comprising a first side and a second side opposite to the first side; - a hollow covering element, removabily positionable on substantially an entire mattress of a bed, comprising an outer side and an inner side having a substantially rectangular shape, and at least one opening placed in correspondence with respective first ends of the outer side and of the inner side, said outer side comprising on a first end at least a first fastening means and, at a specular position and at a height lower than the height of the first fastening means with respect to the first end, a second fastening means, said at least a first and a second fastening means (104a, 104b) being comprised in the plurality of fastening means (104a,...104n); - at least one padding element removably inserted into said hollow covering element through the at least one opening and comprising on a first end at least one fastening means comprised in the plurality of fastening means (104a,...104n), the first side of said at least one fastening means being fixable to the second side of the first fastening means placed in correspondence with the outer side of the hollow covering element; characterized in that the first side of each fastening means (104a,... 104n) is male, in that the second side of each fastening means (104a,... 104n) is female, in that the inner side comprises in correspondence with the first end a plurality of holes (106a,....106n), in that the outer side has a length greater than the length of the inner side in correspondence with the respective first ends and comprises in correspondence with said respective first ends a portion able to be folded around the first end of the inner side, over said portion being positioned the first fastening means, in that the first side of the at least one fastening means included in the at least one padding element is able to pass through a corresponding hole included in the plurality of holes (106a,...106n), and in that the second side of the fastening means comprised in the at least one padding element is able to be fixed to the first side of the second fastening means placed over the outer side of the hollow covering element when said portion is folded around the first end of the inner side. - a plurality of fastening means (104a,... 104n), each fastening means comprising a first side and a second side opposite to the first side; - a hollow covering element, removabily positionable on substantially an entire mattress of a bed, comprising an outer side and an inner side having a substantially rectangular shape, and at least one opening placed in correspondence with respective first ends of the outer side and of the inner side, said outer side comprising on a first end at least a first fastening means and, at a specular position and at a height lower than the height of the first fastening means with respect to the first end, a second fastening means, said at least a first and a second fastening means (104a, 104b) being comprised in the plurality of fastening means (104a,...104n); - at least one padding element removably inserted into said hollow covering element through the at least one opening and comprising on a first end at least one fastening means comprised in the plurality of fastening means (104a,...104n), the first side of said at least one fastening means being fixable to the second side of the first fastening means placed in correspondence with the outer side of the hollow covering element;