A light source system, comprising: a light source for generating an excitation light; a moving color device disposed to receive the excitation light, the moving color device including a first area and a second area, wherein the first area includes two or more first segments, and the second area includes two or more second segments; a driving device for driving the moving color device to move periodically to generate a first light sequence in a first working mode and to generate a second light sequence in a second working mode, wherein the first light sequence contains first lights generated sequentially by the two or more first segments and the second light sequence contains second lights generated sequentially by the two or more second segments, the first light sequence being different from the second light sequence; and a switching device for switching the moving color device between the first working mode and the second working mode; characterized in that some of the two or more first segments transmit a first part of the first light sequence they generate, and some other ones of the two or more first segments reflect a second part of the first light sequence they generate, some of the two or more second segments transmit a first part of the second light sequence they generate, and some other ones of the two or more second segments reflect a second part of the second light sequence they generate; the light source system further including a light combination device, which combines the first part of the first light sequence with the second part of the first light sequence and/or combines the first part of the second light sequence with the second part of the second light sequence. a light source for generating an excitation light; a moving color device disposed to receive the excitation light, the moving color device including a first area and a second area, wherein the first area includes two or more first segments, and the second area includes two or more second segments; a driving device for driving the moving color device to move periodically to generate a first light sequence in a first working mode and to generate a second light sequence in a second working mode, wherein the first light sequence contains first lights generated sequentially by the two or more first segments and the second light sequence contains second lights generated sequentially by the two or more second segments, the first light sequence being different from the second light sequence; and a switching device for switching the moving color device between the first working mode and the second working mode; characterized in that some of the two or more first segments transmit a first part of the first light sequence they generate, and some other ones of the two or more first segments reflect a second part of the first light sequence they generate, some of the two or more second segments transmit a first part of the second light sequence they generate, and some other ones of the two or more second segments reflect a second part of the second light sequence they generate; the light source system further including a light combination device, which combines the first part of the first light sequence with the second part of the first light sequence and/or combines the first part of the second light sequence with the second part of the second light sequence.