▎ 摘　　要

NOVELTY - Preparing fibrous sensor comprises (1) uniformly mixing the homogenized bacterial cellulose nano fibers and ultrasonically dispersing carbon materials in water, and freeze-drying to obtain composite, where the carbon material is carbon nanotube or graphene, the mass of the carbon material is 1-50 wt.% of the bacterial cellulose nano fiber in the composite, and (2) configuring the composite prepared in the step (1) as spinning solution for dry and wet spinning to obtain composite fibers, i.e. fibrous sensor, where the composite fiber has linear structure or spiral structure as whole along the fiber axis, and the diameter of the composite fiber is 50-300 microm. USE - The fiber sensor is useful for intelligent diapers (claimed). ADVANTAGE - The fiber sensor is very suitable to be installed in diapers and can be reused due to the special flexibility of the fiber. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: fibrous sensor prepared by preparation method; and intelligent diapers using fibrous sensor.