Abstract: A laser light source is provided. The laser light source includes: a laser device; a first color wheel and a second color wheel, on both of which there are corresponding color regions, wherein the laser device emits laser which illuminates the first color wheel and the second color wheel sequentially, and exits from the color regions on the second color wheel; a first marker and a second marker arranged respectively on the first and the second color wheels; a first sensor configured to detect the first marker, and to generate a first sense signal; a second sensor configured to detect the second marker, and to generate a second sense signal; and a control unit configured to synchronize the first color wheel and the second color wheel.