A windshield wiper installed, stick closely on the front, rear windshield to wipe out water and comprising an elastic slice, a buckle, a rubber cover and a wiper blade; the elastic slice is a metal slice in curve shape and is in one piece design, two rubber covers in “A” shape are inserted from right and left sides of the metal slice to have the rubber covers on top of the metal slice to increase the elasticity and tenacity of the metal slice, such design is strong and also lowers the manufacturing cost, the fastening indentation on center of the metal slice can allow wiper blade slide in for convenient installation and replacement, the wiper blade can be replaced along without replacing the whole set to reduce the waste.