LISA is a space-borne gravitational wave observatory. Gravitational waves detection in space requires the design of a suitable formation flying configuration that provides a stable environment for detection. Based on LISA, this paper studies how trailing angle affects the configuration and transfer orbit in a more comprehensive way. The simulation results demonstrate that an initial trailing angle ranging from 18° to 23° ensures a stable configuration for LISA. A smaller initial angle facilitates launch but results in an unstable configuration. Conversely, selecting a larger initial trailing angle necessitates a larger maneuvering velocity increment but offers a more stable configuration.