With the development of space exploration, space debris observation and space cameras have been widely concerned. Such satellites usually work in geostationary orbit, where the angle of sunlight and the camera are constantly changing. The existing solutions usually adopt the form of one-cylinder baffle. However, the size of the designed baffle will far exceed the space envelope of the rocket fairing, which is difficult to meet the engineering requirements. To solve this problem, a novel lightweight and efficient two-stage stray light suppression system is proposed in this paper. The sunlight baffle is designed in the form of plane matching halo within the envelope volume constraint, and the second stage earthly light baffle achieves high efficiency of impurity suppression. The hood can be rotated 360° through the turntable to meet the requirements of different angles of stray light suppression. Further, simulation method is used to optimize the design of stray light suppression, mechanical properties and thermal characteristics of the baffle system. The baffle system proposed in this study provides a new idea for the development and application of stray light suppression in space debris observation.