A kind of pet disposably replaces diaper,It include: that the both ends of a tripe shroud set an integrated structure,Tripe shroud inner face center pastes fixed disposable diaper,Diaper sets a moisture absorption face and an antiseepage face,Moisture absorption face internal layer sets an absorbent cotton layer,Moisture absorption face outer layer and outer peripheral edge set a non-woven cloth layer,Moisture absorption face center sets a refluence recess portion,The outer layer in antiseepage face and outer peripheral edge set a waterproof membrane,Moisture absorption face outer peripheral edge and antiseepage face outer peripheral edge are binded,An anti-skidding gum is fixed on the waterproof membrane in antiseepage face center,On anti-skidding gum and sets a release paper and protects anti-skidding gum,Accordingly,Disposable diaper is attached to tripe shroud center by removal strippable paper,Pet belly and fixation are coated again,And disposable diaper is made just can closely to coat pet genitals,Such tripe shroud can re-cover use,And disposable diaper can be often replaced,Make the more comfortable person of pet.一種寵物一次性替換尿布,包括:一肚圍帶的兩端設一結合結構,肚圍帶內面中央貼覆固定一次性尿布,尿布設一吸濕面及一防滲面,吸濕面內層設一吸水棉層,吸濕面外層及外周緣設一不織布層,吸濕面中央設一倒流凹部,防滲面之外層及外周緣設一防水膜,吸濕面外周緣與防滲面外周緣黏合,防滲面中央之防水膜上固定一防滑背膠,防滑背膠上並設一離型紙保護防滑背膠,據此,去除離形紙將一次性尿布貼在肚圍帶中央,再包覆寵物肚子並固定,且使一次性尿布恰可緊密包覆寵物生殖器,如此肚圍帶可重覆使用,且可常更換一次性尿布,使寵物更為舒服者。