The invention provides a novel high-efficiency reel uncoiling machine and an uncoiling method thereof, and relates to the technical field of reel uncoiling. According to the novel high-efficiency reeluncoiling machine and the uncoiling method thereof, first bases are arranged, the number of the first bases is two, first mounting columns are arranged on the upper surfaces of the two first bases, amounting plate is fixedly connected to the positions, close to the top ends, of the outer side walls of the two first mounting columns, a fixing block is fixedly arranged on the back surface of the left side of the mounting plate, an adjusting mechanism is arranged on the position, close to the fixing block, of the back surface of the mounting plate, and a first rotating shaft is connected into the fixing block in a rotating mode. The novel high-efficiency reel uncoiling machine and the uncoiling method thereof have the advantages that reels are reasonably uncoiled, so that the loss rate of products is greatly decreased, and therefore the reject ratio of the standing degree of pins caused by uncoiling is decreased, in addition, the uncoiling efficiency is greatly improved, the cost of processing materials is lowered, meanwhile, the attrition rate of whole equipment is extremely low, and the service life is long.