Here,　the　laminated　shear　model　box　with　adjustable　spring　and　damping　device　independently　developed　was　improved　and　the　corresponding　verification　tests　were　performed.　The　overall　improvement　idea　was　that　the　shear　deformation　ability　of　laminated　shear　model　box　is　improved　by　using　plane　linear　needle　roller　row　to　replace　ball;　the　box＇s　dynamic　boundary　conditions　are　optimized　by　adding　vertical　springs　in　non-main　vibration　directions.　The　test　and　analysis　results　showed　that　compared　with　original　conditions,　the　improved　laminated　shear　model　box　can　produce　larger　relative　displacement　to　have　a　good　effect　of　simulating　large　shear　deformation;　adding　left　and　right　vertical　springs　can　increase　the　continuity　of　shear　model　box　displacement　and　make　it　closer　to　the　actual　soil　body　deformation　response.　©　2021,　Editorial　Office　of　Journal　of　Vibration　and　Shock.　All　right　reserved.