▎ 摘　　要

NOVELTY - A humidity sensitive composition includes 0.01-1 wt.% graphene oxide, and 0.1-20 wt.% protective agent including a polar polymer. USE - The humidity sensitive composition is useful as material for preparing flexible humidity sensor (all claimed). ADVANTAGE - The humidity sensitive composition has excellent humidity sensitive characteristics and stability. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a flexible humidity sensor, which comprises a humidity sensitive layer made of the humidity sensitive composition; and (2) preparation of the flexible humidity sensor.