▎ 摘　　要

NOVELTY - Preparing conductive double-network hydrogel involves ultrasonically dispersing conductive agent and water to obtain dispersion, heating and stirring dispersion liquid, polyvinyl alcohol and locust bean gum, cooling and mixing with sodium tetrafluoroborate solution to obtain conductive dual network hydrogels. USE - Preparation method of conductive double-network hydrogel used in flexible mechanical sensor for human body movement detection, health care. ADVANTAGE - The method provides conductive double-network hydrogel with high conductivity, excellent self-repairing performance, excellent tensile property and compression performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1. A conductive double-network hydrogel. 2. A sensing layer. 3. A Flexible electronic device, which comprises double-network hydrogel prepared by the preparation method or the sensing layer.