The present invention relates to a system and a method for diagnosing skin with a health care wearable device and a smartphone connected. The system comprises: a health care wearable device (10) which takes an image of user&primes skin through a camera (11) at each preset time, measures the amounts of moisture and oil of the user&primes skin through a sensor (12), measures ultraviolet and infrared exposure through an ultraviolet/infrared LED (13) and in which a sensor data input unit (14) receives the taken image, the moisture amount, and the oil amount and generates skin condition information a user terminal (20) which transmits received driving time setting information to the health care wearable device (10), transmits skin condition information to an operation server (30) with a unique terminal ID, and receives skin diagnosis information corresponding to the skin condition information from the operation server (30) and the operation server (30) which receives the skin condition information and the unique terminal ID from the user terminal (20), compares the received skin condition information with skin condition information stored in advance in a database in correspondence with the unique terminal ID, transmits updated skin diagnosis information to the user terminal (20), and transmits prescription information, product recommendation information, or dermatology recommendation information in correspondence with the taken image, the moisture amount, and the oil amount included in the skin diagnosis information, to the user terminal (20).COPYRIGHT KIPO 2016본 발명은 헬스케어 웨어러블 디바이스와 스마트폰을 연동한 피부진단 시스템 및 방법에 관한 것으로서, 기 설정된 시간마다 카메라(11)를 통해 사용자의 피부를 촬영하고, 센서(12)를 통해 사용자 피부의 수분량 및 유분량을 측정하며, 자외선/적외선 LED(13)를 통해 자외선과 적외선 노출량을 측정하고, 센서데이터 입력부(14)가 촬영된 이미지, 수분량 및 유분량을 입력받아 피부 상태정보를 생성하는 헬스케어 웨어러블 디바이스(10) 입력받은 구동시간 설정정보를 헬스케어 웨어러블 디바이스(10)로 전송하고, 피부 상태정보를 단말기 고유ID와 함께 운영서버(30)로 전송하고, 운영서버(30)로부터 피부 상태정보에 대응하는 피부 진단정보를 수신하는 사용자 단말기(20) 및 사용자 단말기(20)로부터 피부 상태정보 및 단말기 고유ID를 수신하고,