A disposable absorbent article, comprising a permeable top sheet, an impermeable back sheet, an absorbent core placed between the top and back sheets containing absorbent material fibres and particles of superabsorbent material, external barriers cuffs, waist and leg elastic means, a fastening system and union means; characterised in that at least 50% these items contain biodegradable compounds, being such biodegradable compounds made from naturally occurring compounds, so that after certain period of time they break down and transform in less complex compounds, until they reach their most basic components, and wherein the biodegradable compounds are selected from: for the top sheet of the article: a nonwoven fabric containing cotton, a nonwoven fabric containing polylactic acid or poly-hydroxy-alcanoates or a nonwoven fabric containing a pro-degrading agent; for the back sheet of the article: a waterproof film containing polylactic acid or poly-hydroxyalcanoates or a polyethylene containing a pro-degrading agent; or a laminated layer of a waterproof film and a nonwoven fabric wherein the waterproof film includes PLA, PHA or a polyethylene containing a pro-degrading agent and the nonwoven fabric includes PLA, PHA, cotton or a pro-degrading agent; as absorbent core material cellulose fibers as superabsorbent material: particles containing at least 20% of biodegradable particles; as barrier cuffs: a nonwoven fabric containing PLA, PHA or a pro-degrading agent; as elastic means: latex, natural rubber or elastic materials containing polyolefin plus a pro-degrading agent; as fastening system: a couple of bands and a front band made from PHA or PLA or polyethylene or polypropylene containing a pro-degrading agent; as union means: adhesives containing PHA or PLA. and wherein the top sheet of the article is a nonwoven fabric with a weight between 10 and 15 gr/m2 formed from bicomponent fibers of the core and sheath type, with the core containing 80-100% of polylactic acid and the sheath containing 80-100% of polypropylene. for the top sheet of the article: a nonwoven fabric containing cotton, a nonwoven fabric containing polylactic acid or poly-hydroxy-alcanoates or a nonwoven fabric containing a pro-degrading agent; for the back sheet of the article: a waterproof film containing polylactic acid or poly-hydroxyalcanoates or a polyethylene containing a pro-degrading agent; or a laminated layer of a waterproof film and a nonwoven fabric wherein the waterproof film includes PLA, PHA or a polyethylene containing a pro-degrading agent and the nonwoven fabric includes PLA, PHA, cotton or a pro-degrading agent; as absorbent core material cellulose fibers as superabsorbent material: particles containing at least 20% of biodegradable particles; as barrier cuffs: a nonwoven fabric containing PLA, PHA or a pro-degrading agent; as elastic means: latex, natural rubber or elastic materials containing polyolefin plus a pro-degrading agent; as fastening system: a couple of bands and a front band made from PHA or PLA or polyethylene or polypropylene containing a pro-degrading agent; as union means: adhesives containing PHA or PLA. and wherein the top sheet of the article is a nonwoven fabric with a weight between 10 and 15 gr/m2 formed from bicomponent fibers of the core and sheath type, with the core containing 80-100% of polylactic acid and the sheath containing 80-100% of polypropylene.