Abstract: To fulfill the cooperative saturation strike mission of multiple hypersonic vehicles during the diving phase, the traditional separated design scheme that divides guidance loops and attitude control loops into independent subsystems brings severe dynamic coupling mismatch. Such a design fails to satisfy multiple stringent constraints simultaneously, including unified impact time and preset terminal attack angle, and produces obvious miss distances when intercepting maneuvering moving targets. To tackle the above practical defects, this paper puts forward a finite-time convergent sliding-mode cooperative integrated guidance and control (CIGC) strategy. The three-dimensional diving kinematics of hypersonic vehicles is decoupled into the longitudinal dive plane and lateral turning plane to realize modular controller design. A unified global sliding-mode surface is constructed for two channels, which comprehensively contains time coordination error relative to formation average time-to-go, terminal angle tracking error and line-of-sight (LOS) relative motion states. An innovative adaptive reaching law integrating constant-speed and exponential convergence mechanisms is designed, which takes real-time LOS angular rate as the adjustment parameter. It speeds up state convergence in the early diving stage with large initial deviations and guarantees smooth sliding motion near the target at the terminal phase, while a saturation function substitutes the sign function to suppress