A laser projection display comprising: a light source unit configured to emit laser light; a light resolution unit configured to resolve the laser light into a first light and a second light; an optical scanner configured to scan the resolved first light to a screen; a sensing unit configured to sense the resolved second light; and an alignment compensation unit configured to calculate a location variation value of the sensed second light and compensate color alignment to correspond to the calculated location variation value, wherein a distance between a light emitting surface of the light resolution unit and a light incidence surface of the optical scanner is equal to a distance between the light emitting surface of the light resolution unit and a light incidence surface of the sensing unit; wherein the alignment compensation unit comprises: a color light identifier configured to measure an intensity of the sensed second light and to identify the second light as red, green, blue or infrared light based on the measured intensity by comparing the measured intensity of the light with a reference intensity value of a preset color light; a location measurer configured to measure a location value of the identified red light, green light, or blue light; a first calculator configured to calculate a relative location value between corresponding color lights based on measured location values; a second calculator configured to compare the calculated relative location value with a preset relative location initial value and to calculate a location variation value based on the comparison; and a controller configured to control the color light identifier, the location measurer, and the first and second calculators and to compensate the color alignment based on the calculated location variation value. a light source unit configured to emit laser light; a light resolution unit configured to resolve the laser light into a first light and a second light; an optical scanner configured to scan the resolved first light to a screen; a sensing unit configured to sense the resolved second light; and an alignment compensation unit configured to calculate a location variation value of the sensed second light and compensate color alignment to correspond to the calculated location variation value, wherein a distance between a light emitting surface of the light resolution unit and a light incidence surface of the optical scanner is equal to a distance between the light emitting surface of the light resolution unit and a light incidence surface of the sensing unit; wherein the alignment compensation unit comprises: a color light identifier configured to measure an intensity of the sensed second light and to identify the second light as red, green, blue or infrared light based on the measured intensity by comparing the measured intensity of the light with a reference intensity value of a preset color light; a location measurer configured to measure a location value of the identified red light, green light, or blue light; a first calculator configured to calculate a relative location value between corresponding color lights based on measured location values; a second calculator configured to compare the calculated relative location value with a preset relative location initial value and to calculate a location variation value based on the comparison; and a controller configured to control the color light identifier, the location measurer, and the first and second calculators and to compensate the color alignment based on the calculated location variation value. a color light identifier configured to measure an intensity of the sensed second light and to identify the second light as red, green, blue or infrared light based on the measured intensity by comparing the measured intensity of the light with a reference intensity value of a preset color light; a location measurer configured to measure a location value of the identified red light, green light, or blue light; a first calculator configured to calculate a relative location value between corresponding color lights based on measured location values; a second calculator configured to compare the calculated relative location value with a preset relative location initial value and to calculate a location variation value based on the comparison; and a controller configured to control the color light identifier, the location measurer, and the first and second calculators and to compensate the color alignment based on the calculated location variation value.