A diaper having wetness detectors, a system thereof and a wetness detecting method are adapted to detect the excreting status of an animal. The diaper includes a first set of contacts, and a second set of contacts which are constituted by conductive material. The first set of contacts and the second set of contacts are respectively disposed on proximal and distal area of the diaper corresponding to the excretory organ of the animal. A detecting circuit detects the electrical property of the first and second set of contacts and then determines the excreting status of the animal to be a reference for nursing people.一種具尿布濕度檢測裝置之尿布、系統及尿布濕度檢測方法適於感測一動物之排泄狀態。尿布包含由導電織線構成的第一組接點及第二組接點,第一組接點與第二組接點分別配置於排泄器官的近端及遠端,檢測電路感測並依據第一組接點與第二組接點的電性判斷尿布濕度狀態(排泄狀態),以做為照護人員參考之資訊。10...尿布20...裡層40...檢測層44,44a,44b,44c,44d...導電織線45a,45b...第一、二組接點60...第一連接器92...尿道口(近端)94...肛門(遠端)