An ultra-short embedded baffle was put forward to reduce the size of an aerial satellite and to control its attitude meanwhile maintaining the result of stray light suppressing. The basic structure of the ultra-short embedded baffle was introduce, and its optimized design method was given. The shape of the baffle was redesigned, and an ultra-short multilayer shading tube was designed to replace the quite long baffle designed by existing methods. The installation mode between the baffle and the main structure was changed. The designed baffle was installed into the main structure of an air sensor by an embedding manner, by which the size of the baffle was reduced in the greatest extent. Finally, a concrete aerial camera was taken for an example, and the feasibility of this baffle and its effect on the stray light suppressing were analyzed. A baffle with two-layer concentric cylindrical tube was optimizing by Light-tools software and its stray light suppressing was evaluated. The simulation results show that after the ultra-short embedded structured was used in the baffle, its whole length and weight are just one third of that of the traditional one. The Point Source Transmission(PST) shows a declining curve, and the PST value of the optical system is less than 10-7 when the off-axis angle is wider than 25°. Furthermore, the designed baffle suppresses the undesired stray-light flux at the focal plane, the suppressed effectiveness is the same as that of the off-axis and coaxial systems, and meets the requirements of the applications.