The invention discloses a light time domain emitter dual light source emission structure comprising a shell. The left side in the shell is provided with a separating plate. The cavity of the shell ofthe left side of the separating plate is fixedly provided with a main circuit board and a power supply. The middle part of the right side of the shell is provided with a fixed sleeve. The upper side and the lower side of the fixed sleeve are respectively provided with a fixed frame. According to the light time domain emitter dual light source emission structure, the structure arrangement is reasonable, two light sources are ingeniously and vertically arranged, the light emitted by the two light sources is reflected to the output optical cable by using the reflecting mirror and the upper mirrorplate and the lower mirror plate are cooperatively arranged on the front end of the output optical cable so that the light emitted by the two light sources is enabled to be imported to the output optical cable at a certain incident angle, total reflection of the light on the output optical cable can be realized and thus light transmission can be realized. Besides, the vibration reducing and supporting mechanism is ingeniously arranged so that the influence of vibration outside the shell can be effectively eliminated and dual light source emission is ensured to be stable.