The present invention discloses an electronic vital-sign system with a manual vital-sign data input function, wherein a vital-sign recording unit is added to an electronic vital-sign system and used to input vital-sign data manually. The electronic vital-sign system detects vital-sign data automatically and receives other vital-sign data manually input by the user, such as the data of at least one of respiration rate, blood glucose, body temperature, body weight, food intake volume, fluid infusion volume, urine volume, stool volume and pain score. The system transmits the detected vital-sign data and manually-input vital-sign data to a cloud database where the vita-sign data is processed and integrated. The present invention incorporates a manual vital-sign data input function with the original vital-sign detection function and far-end transmission function of an electronic vital-sign system to provide appropriate assistance for hospitals, telecare centers, elderly nursing centers, elderly communities, and senior citizens living alone.