To provide a laser distance measuring apparatus that can set the irradiation range of the laser beam to the front ground surface appropriately regardless of the inclination of the front ground surface. A laser distance measuring apparatus controls the scanning mechanism to performs two-dimensional scan which scan laser beam in an irradiation angle range of the right and left direction to the traveling direction of own vehicle and scans laser beam in an irradiation angle range of the up and down direction with respect to the traveling direction of own vehicle; detects a relative inclination information of the up and down direction of a ground surface in front of own vehicle with respect to a ground surface where own vehicle is located; and moves the irradiation angle range of the up and down direction to up side or down side according to the relative inclination information.