The invention relates to the field of disposable sanitary products, in particular to a composite elastic waistline pull up diaper. The composite elastic waistline pull up diaper comprises an outer covering layer, an inner covering layer and an absorption body, the two ends in the length direction of the inner covering layer and the outer covering layer both exceed the absorption body, a lower waistline part is formed by the areas, exceeding the absorption body and overlapped, of the inner covering layer and the outer covering layer, an upper waistline part is arranged on one side of the lowerwaistline part in a connected mode, a lower elastic part is arranged in the lower waistline part, the upper waistline part comprises an upper elastic part and waist non-woven fabric, the lower elasticpart and the upper elastic part are combined to form a composite elastic waistline, the lower elastic part comprises a plurality of elastic rubber bands, and the two ends, on one side of the absorption body, of the lower waistline part and the upper waistline part are fixedly connected with the parts, on the other side of the absorption body, of the lower waistline part and the upper waistline part to form a connecting part. The invention further provides a manufacturing technology of the composite elastic waistline pull up diaper. The technical problems that existing pull up diapers are likely to produce a bounding feeling and a tying trace are solved.