▎ 摘　　要

NOVELTY - Preparing elastic strain sensor comprises (i) etching the MAX phase material to obtain MXene material, (ii) adding conductive material to MXene material to obtain MXene complex material, (iii) modifying the MXene complex material on the supporting material to form the sensitive layer of a strain sensor, (iv) coating and patterning an elastic electrode support layer on the substrate, (v) preparing an electrode conductive layer on the elastic electrode support layer by using stripping process, (vi) removing the substrate to obtain elastic electrode, (vii) casting an elastic polymer to prepare elastic substrate, and transferring the elastic electrode to the elastic substrate, and (viii) placing the sensitive layer of the strain sensor on the elastic electrode. USE - The method is useful for preparing elastic strain sensor. ADVANTAGE - The method: utilizes a structure in which MXene complex material is modified on a support material to measure strain; improves the sensitivity of the sensor; and stretches range and service life. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for an elastic strain sensor prepared by above mentioned method.