A light source system, comprising: a light emitting device configured to provide first light and second light that are emitted in time sequence of the first light and the second light; and a light splitting system comprising: a light splitting device configured to split the first light into first primary light and second primary light and to split the second light into two paths of third primary light, in such a manner that the first primary light exits along a first optical path and the second primary light exits along a second optical path in a first time-sequence, the first primary light exits along the second optical path and the second primary light exits along the first optical path in a second time-sequence, and the two paths of third primary light exit respectively along the first optical path and the second optical path in a third time-sequence; and two light channels respectively disposed on the first optical path and the second optical path, wherein the light channel in the first optical path is used for exiting light in time sequence of the first primary light, the second primary light, and the third primary light, and the light channel in the second optical path is used for exiting light in time sequence of the second primary light, the first primary light, and the third primary light. a light emitting device configured to provide first light and second light that are emitted in time sequence of the first light and the second light; and a light splitting system comprising: a light splitting device configured to split the first light into first primary light and second primary light and to split the second light into two paths of third primary light, in such a manner that the first primary light exits along a first optical path and the second primary light exits along a second optical path in a first time-sequence, the first primary light exits along the second optical path and the second primary light exits along the first optical path in a second time-sequence, and the two paths of third primary light exit respectively along the first optical path and the second optical path in a third time-sequence; and two light channels respectively disposed on the first optical path and the second optical path, wherein the light channel in the first optical path is used for exiting light in time sequence of the first primary light, the second primary light, and the third primary light, and the light channel in the second optical path is used for exiting light in time sequence of the second primary light, the first primary light, and the third primary light. a light splitting device configured to split the first light into first primary light and second primary light and to split the second light into two paths of third primary light, in such a manner that the first primary light exits along a first optical path and the second primary light exits along a second optical path in a first time-sequence, the first primary light exits along the second optical path and the second primary light exits along the first optical path in a second time-sequence, and the two paths of third primary light exit respectively along the first optical path and the second optical path in a third time-sequence; and two light channels respectively disposed on the first optical path and the second optical path, wherein the light channel in the first optical path is used for exiting light in time sequence of the first primary light, the second primary light, and the third primary light, and the light channel in the second optical path is used for exiting light in time sequence of the second primary light, the first primary light, and the third primary light.