The invention discloses a repeater optical fiber delay measurement method and device. The method comprises the following steps: measuring a first pseudo noise offset, wherein the first pseudo noise offset is the pseudo noise offset of the strongest multipath in a donor sector; measuring a second pseudo noise offset, wherein the second pseudo noise offset is the pseudo noise offset of the strongestmultipath of the repeater; and obtaining the repeater optical fiber delay according to the difference between the first pseudo noise offset and the second pseudo noise offset. The repeater optical fiber delay measurement method and device disclosed by the invention are not dependent on any experience, all calculations depend on the pseudo noise offset of the multipath signal, and the pseudo noiseoffset of the multipath signal is based on the CDMA short code, so that the test result of the repeater optical fiber delay measurement method and device disclosed by the invention is very accurate.