Abstract: To address the problem of simultaneously intercepting a maneuvering target with angular constraint with multiple missiles under undirected communication topology, a fixed-time convergence distributed multi-missile cooperative guidance law was proposed under event-triggered control method. A relative kinematic model between the missile and the target was first established, decoupling into two directions along the line of sight and perpendicular to the line of sight in the line-of-sight coordinate system. Subsequently, considering time constraints along the line-of-sight direction, a fixed-time convergence cooperative guidance law based on an event-triggered mechanism was introduced to ensure consistency in attack time. Meanwhile, spatial angle constraints along the line of sight normal were considered, and a distributed spatial cooperative guidance law based on fixed-time convergence theory was proposed to ensure rapid convergence of line-of-sight angles and angular rates to desired values and meet off-target deviation and terminal angle constraints. Additionally, an observer based on fixed-time convergence was employed to estimate and compensate for system disturbances induced by target maneuvers. The stability of the proposed cooperative guidance laws was verified using Lyapunov theory. Finally, mathematical simulations were conducted to validate the effectiveness of the proposed cooperative guidance law.