A wiper blade (10; 110; 210) attached to a wiper arm (11; 111; 211) provided to a vehicle to make reciprocating wiping-out motion over a windshield (12; 112; 212), the wiper blade comprising: a blade rubber (20; 120; 220) provided to the wiper blade and in contact with the windshield; and a washer apparatus (50; 160; 260) provided to a coupling member (40; 140; 240) between the wiper arm and the wiper blade to inject washer liquid, characterized in that: the washer apparatus has: forward-side injection nozzles (A1, B1, C1; A, B, C) oriented to a forward side of the blade rubber and injecting washer liquids at the time of forward-side wiping-out motion; and backward-side injection nozzles (D1, E1; D, E) oriented to a backward side of the blade rubber and injecting washer liquids at the time of backward-side wiping-out motion; injection positions (A2, B2, C2) toward which washer liquids are injected from the forward-side injection nozzles and injection positions (D2, E2) toward which washer liquids are injected from the backward-side injection nozzles are shifted and alternately arranged in a longitudinal direction of the blade rubber, as compared with the injection positions (D2, E2) toward which washer liquids are injected from the backward-side injection nozzles, the outermost injection position is closer to an outer end of the blade rubber in the longitudinal direction, and the innermost injection position is closer to an inner end of the blade rubber in the longitudinal direction. a blade rubber (20; 120; 220) provided to the wiper blade and in contact with the windshield; and a washer apparatus (50; 160; 260) provided to a coupling member (40; 140; 240) between the wiper arm and the wiper blade to inject washer liquid, characterized in that: the washer apparatus has: forward-side injection nozzles (A1, B1, C1; A, B, C) oriented to a forward side of the blade rubber and injecting washer liquids at the time of forward-side wiping-out motion; and backward-side injection nozzles (D1, E1; D, E) oriented to a backward side of the blade rubber and injecting washer liquids at the time of backward-side wiping-out motion; injection positions (A2, B2, C2) toward which washer liquids are injected from the forward-side injection nozzles and injection positions (D2, E2) toward which washer liquids are injected from the backward-side injection nozzles are shifted and alternately arranged in a longitudinal direction of the blade rubber, as compared with the injection positions (D2, E2) toward which washer liquids are injected from the backward-side injection nozzles, the outermost injection position is closer to an outer end of the blade rubber in the longitudinal direction, and the innermost injection position is closer to an inner end of the blade rubber in the longitudinal direction. the washer apparatus has: forward-side injection nozzles (A1, B1, C1; A, B, C) oriented to a forward side of the blade rubber and injecting washer liquids at the time of forward-side wiping-out motion; and backward-side injection nozzles (D1, E1; D, E) oriented to a backward side of the blade rubber and injecting washer liquids at the time of backward-side wiping-out motion; injection positions (A2, B2, C2) toward which washer liquids are injected from the forward-side injection nozzles and injection positions (D2, E2) toward which washer liquids are injected from the backward-side injection nozzles are shifted and alternately arranged in a longitudinal direction of the blade rubber, as compared with the injection positions (D2, E2) toward which washer liquids are injected from the backward-side injection nozzles, the outermost injection position is closer to an outer end of the blade rubber in the longitudinal direction, and the innermost injection position is closer to an inner end of the blade rubber in the longitudinal direction.