▎ 摘　　要

NOVELTY - The device has a three-dimensional frame whose center part is formed with a cavity for placing a to-be-tested three-dimensional structure device. Each surface of the three-dimensional frame is formed as a hollow shaped structure, where the three-dimensional frame is made of mixed graphene and platinum-catalyzed silica gel. A three-dimensional frame surface is coated with a thermochromic layer, where the thermochromic layer is made of mixed Ecoflex and thermochromic material. USE - Three-dimensional deformation double-channel detecting device. ADVANTAGE - The device has high detection precision, mechanical strength and application reliability. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) a method for preparing a three-dimensional deformation double-channel detection device; and (2) detection method based on the three-dimensional deformation double-channel detection device