An electric arc jet coating device comprises two jet coating wire rods; a pushing-feeding part for feeding the jet coating wire rods; a drawing-feeding part for relaying and carrying the jet coating wire rods from the pushing-feeding part; a pipe for feeding and guiding the jet coating wire rods between the pushing-feeding part and the drawing-feeding part; and a jet coating gun which is fed to the jet coating wire rods from the drawing-feeding part for electric arc jet coating, is used for excuting a speed control on the drawing-feeding part during a jet coating, and for excuting a torque control on the pushing-feeding part. When the jet coating wire rods to be exchanged are directed into the pipe by only the pushing-feeding part, the feeding torque of the pushing-feeding part is swithced to the a torque larger than that originally for jet coating to counteract the friction resistance applied to the jet coating wire rods by the pipe before the front end part of the jet coating wire rods arrives at the drawing-feeding part. Therefore, time needed for the exchange task of the jet coating wire rods is reduced, and the jet coating wire rods can be fed stably during jet coatings.