The invention discloses a quenching device and a quenching method for two ends of a scraper, and belongs to the field of forge piece heat treatment. The quenching device comprises a stand, a horizontal conveying mechanism arranged on the stand, quenching sensors and a cooling spray mechanism, wherein the quenching sensors are closed electromagnetic sensors, and the quenching sensors at two ends are connected to opening/closing devices respectively; the opening/closing devices are arranged on the left and right sides of the horizontal conveying mechanism respectively; each opening/closing device respectively comprises a cart, a guide way, an oil cylinder and a bracket; and the oil cylinders of the opening/closing devices and the horizontal conveying mechanism are connected to a controller respectively. Furthermore, the invention discloses a method for quenching two ends of the scraper by virtue of the quenching device. The quenching device and method for two ends of the scraper disclosed by the invention, by changing the quenching sensors into closed structures from open structures, improve heating efficiency by 100% and solve a problem of low heating efficiency; and the device and the method disclosed by the invention have the characteristics of solving problems of uneven quenching hardness, high energy consumption of equipment and temperature decrease before quenching after the scraper is heated.