▎ 摘　　要

NOVELTY - A porous locust bean glue hydrogel is prepared by (s1) mixing polyvinyl alcohol, conductive carbon material and water, heating and dissolving to obtain mixed solution (A), (s2) adding locust bean gum in mixed solution (A) and dissolving to obtain mixed solution (B), (s3) adding sacrificial templates in the mixture (B), stirring, freezing and molding, and (s4) using eluent to remove the sacrificial template treated. USE - Porous locust bean glue hydrogel used for preparing piezoresistive sensors (all claimed) which is used in wearable device. ADVANTAGE - The method provides the porous locust bean gum hydrogel with rich pore structure, improving the sensitivity of piezoresistive sensor, and improving the deformation of sensor. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: a piezoresistive sensor, which comprises electrode, and the porous locust bean glue hydrogel; and preparation of piezoresistive sensor, which involves sequentially assembling electrode, and the porous locust bean glue hydrogel.