The invention discloses a laser light source system used for laser display. The system comprises a laser emission unit, a light conduction unit and a light gathering unit. The laser emission unit is arranged in a preset position in a projection device so as to generate corresponding segmented laser beams. The light conduction unit cooperates with the laser emission unit so as to conduct and output the emitted segmented laser beams to the preset position. The light gathering unit cooperates with the light conduction unit so as to gather the segmented laser beams into a main laser beam for output. The segmented laser beams are configured to be perpendicular to the output direction of the main laser beam. According to the invention, proper spatial arrangement is performed on the light source system; through a simple structure design, fiberless transmission of the laser in space is achieved; occupied area is quite small; implementable effects are favorable; space utilization rate is high; and integrated design of the device is facilitated.