The horizontal stretching machine for biomaterials has various loading tests: it can achieve single axis independent testing, as well as double axis proportional and non proportional loading testing, meeting the mechanical performance testing needs of different biomaterials. $r $n microstructure observation: With the help of microscopic observation equipment such as optical microscopes and X-ray diffractometers, it is possible to characterize the evolution law of the microstructure of materials during the loading process online. $r $n optional video extensometer can achieve non-contact measurement and control testing of biaxial strain, avoiding contact damage to biological material samples and improving measurement accuracy. $r $n Environmental Simulation Test: Equipped with a standard constant temperature water bath system, it can simulate biological materials at 37 ℃