Abstract: This paper investigates a finite-time event-triggered control design method based on observers for a class of nonlinear systems with non-strict feedback structures. First,a fuzzy logic system is employed to handle the unknown nonlinear continuous functions within the system. Based on a finite-time command filter,a fractional-order error compensation system is constructed,effectively avoiding the “complexity explosion” issue commonly encountered in the backstepping design approach. A fuzzy state observer estimates the unknown system state,while a disturbance observer estimates the unknown external disturbance. To reduce communication overhead,a finite-time adaptive event-triggered control algorithm is designed to prevent Zeno behavior. Using finite-time Lyapunov theory,it is proven that the tracking error,state observer error,and disturbance observer error converge to a neighborhood of zero within finite time,while ensuring boundedness of all signals in the closed-loop system. Finally,the feasibility of the proposed control method is verified through simulation examples.