A laser radar device includes a first signal sequence converting unit that converts a transmission signal generated by a transmission signal generating unit into a first pulse signal sequence; a second signal sequence converting unit that converts a reception signal outputted from a reflected light receiving unit into a second pulse signal sequence; and a range calculating unit that calculates a range to a ranging target from a time difference between a time at which transmission light is irradiated by a light irradiating unit and a time at which reflected light is received by the reflected light receiving unit, and an acceptance or refusal selecting unit calculates a degree of match between the first pulse signal sequence and the second pulse signal sequence, and selects or discards the range calculated by the range calculating unit on the basis of the degree of match.