A windshield wiper, comprising: a latch seat; at least one elastic arm, connected to the latch seat and comprising an opening slot disposed on one end thereof, a top surface and a bottom surface; a scraper, attached to the bottom surface of the elastic arm; at least one blocking member comprising a substrate attached to the top surface of the at least one elastic arm and a side blocking member penetrating through the opening slot of the at least one elastic arm and blocking the scraper along a longitudinal direction of the elastic arm; characterised in that: the windshield wiper comprises at least one connecting strip having a first side and a second side opposite to the first side and adapted to sheathe the at least one elastic arm, said first side covering the bottom surface of the at least one elastic arm; wherein the at least one connecting strip comprises a lower guiding track disposed on the second side thereof, the lower guiding track is extended along a longitudinal direction of the at least one connecting strip, the scraper comprises an upper guiding track disposed on an upper side thereof, the upper guiding track being extended along a longitudinal direction of the scraper and penetrating the lower guiding track, and the side blocking portion is extended along a direction perpendicular to the longitudinal direction of the elastic arm to block the connecting strip; wherein the windshield wiper comprises a pair of elastic arms extending in opposite directions from the latch seat, a pair of connecting strips and a pair of blocking members, wherein one end of each elastic arm is connected to the latch seat, each connecting strip sheathes an elastic arm of the pair of elastic arms correspondingly, each connecting strip comprises the lower guiding track arranged on the second side thereof, and the upper guiding track of the scraper penetrates each lower guiding track of the pair of connecting strips. a latch seat; at least one elastic arm, connected to the latch seat and comprising an opening slot disposed on one end thereof, a top surface and a bottom surface; a scraper, attached to the bottom surface of the elastic arm; at least one blocking member comprising a substrate attached to the top surface of the at least one elastic arm and a side blocking member penetrating through the opening slot of the at least one elastic arm and blocking the scraper along a longitudinal direction of the elastic arm; characterised in that: the windshield wiper comprises at least one connecting strip having a first side and a second side opposite to the first side and adapted to sheathe the at least one elastic arm, said first side covering the bottom surface of the at least one elastic arm; wherein the at least one connecting strip comprises a lower guiding track disposed on the second side thereof, the lower guiding track is extended along a longitudinal direction of the at least one connecting strip, the scraper comprises an upper guiding track disposed on an upper side thereof, the upper guiding track being extended along a longitudinal direction of the scraper and penetrating the lower guiding track, and the side blocking portion is extended along a direction perpendicular to the longitudinal direction of the elastic arm to block the connecting strip; wherein the windshield wiper comprises a pair of elastic arms extending in opposite directions from the latch seat, a pair of connecting strips and a pair of blocking members, wherein one end of each elastic arm is connected to the latch seat, each connecting strip sheathes an elastic arm of the pair of elastic arms correspondingly, each connecting strip comprises the lower guiding track arranged on the second side thereof, and the upper guiding track of the scraper penetrates each lower guiding track of the pair of connecting strips. at least one connecting strip having a first side and a second side opposite to the first side and adapted to sheathe the at least one elastic arm, said first side covering the bottom surface of the at least one elastic arm; wherein the at least one connecting strip comprises a lower guiding track disposed on the second side thereof, the lower guiding track is extended along a longitudinal direction of the at least one connecting strip, the scraper comprises an upper guiding track disposed on an upper side thereof, the upper guiding track being extended along a longitudinal direction of the scraper and penetrating the lower guiding track, and the side blocking portion is extended along a direction perpendicular to the longitudinal direction of the elastic arm to block the connecting strip; wherein the windshield wiper comprises a pair of elastic arms extending in opposite directions from the latch seat, a pair of connecting strips and a pair of blocking members, wherein one end of each elastic arm is connected to the latch seat, each connecting strip sheathes an elastic arm of the pair of elastic arms correspondingly, each connecting strip comprises the lower guiding track arranged on the second side thereof, and the upper guiding track of the scraper penetrates each lower guiding track of the pair of connecting strips.