The geotechnical dynamic triaxial testing apparatus is a laboratory device used for studying and testing the dynamic properties of soil. It is primarily employed for conducting sand liquefaction tests, as well as conventional or high-frequency vibration tests for various soils, including dynamic strength, elastic modulus, and damping coefficient measurements. It can also perform cyclic loading tests. The geotechnical dynamic triaxial testing apparatus is applicable in various construction engineering survey and design departments, water resources investigation and design departments, highway, railway, metallurgical survey and design sectors, and seismic departments for foundation and vibration foundation design, as well as earthquake research.