The present invention relates to a smart diaper comprising: a controlling unit (11) which has the shape of tongs to be able to be attached to and detached from a diaper and generates sensed information about urine and feces by sensing a voltage signal made from a film-shaped battery-type sensing cable (20) that senses the defecation directly； a body (10) including a communication unit (12) for transferring the sensed information about urine and feces to a smart phone or a monitoring system accessing a wireless communication network； and a battery-type sensing cable (20) installed inside the diaper and having a film shape in which a cotton material or a material which is effective in absorption is coated on an electric conductor (a carbon fiber or copper) including a thin and narrow cathode for sensing urine and feces and on a conductor (zinc or aluminum) including an anode. According to the present invention, voltage is not applied when urine or feces do not contact the battery-type sensing cable, so that the smart diaper is quite electrically stable for both guardians and wearers and reduces electric power consumption remarkably in contrast to existing techniques that use a short circuit method. When a discharge of urine and feces is sensed, the sensed result about urine and feces is transferred to a preset device (a monitoring system for protecting children and patients, or a smart phone) so that a guardian or a care worker can immediately take appropriate measures. [Reference numerals] (10) Body (10)； (11) Controlling unit (11)； (12) Communication unit (12)； (13) LED lighting unit (13)； (14) Speaker (14)； (20) Diaper； (AA) Wireless communication net (Bluetooth, etc.)； (BB) Smart phone, monitoring system for protecting children and patients본 발명은 스마트 기저귀에 관한 것으로서, 집게 형태로 기저귀와 탈부착이 가능하도록 구성되어, 배변 상태를 직접적으로 감지하는 필름형태의 전지형 감지 케이블(20)에서 유기된 전압신호를 감지하여 대소변 감지정보를 생성하는 제어부(11), 및 대소변 감지정보를 무선 통신망을 통해 접속된 스마트폰 또는 모니터링 시스템으로 전송하는 통신부(12)로 구성된 본체(10)； 및 기저귀 내에 설치되되, 대소변을 감지하
