There　are　strong　dynamic　coupling　effects　exist　between　vehicles　lateral　and　longitudinal　motion,　especially　in　lane　changing　process.　It　is　difficult　to　get　ideal　control　effect　by　lateral　and　longitudinal　control　separately.　Thus,　to　realize　a　smooth　and　safety　lane　changing　process　the　nonlinear　lateral　and　longitudinal　coupling　vehicle　model　was　established.　According　to　sliding　mode　control　and　disturbance　observer　theory　the　integrated　longitudinal　and　lateral　control　for　lane　change　was　studied　and　a　composite　control　strategy　was　proposed　based　on　sliding　mode　control　and　disturbance　observer.　This　strategy　used　disturbance　observer　to　estimate　outside　disturbance　or　uncertainty　that　exist　in　system　and　the　estimate　value　was　to　compensated　the　sliding　mode　controller＇s　switching　gain　for　improve　controller＇s　robustness　and　weaken　its　output　chattering.　Prove　the　stability　of　this　control　strategy　based　on　Lyapunov　theory.　The　simulation　results　of　an　example　are　investigated　to　show　the　feasibility　and　the　effectiveness　of　this　control　strategy.