The invention belongs to the technical field of aluminum slag recovery, and particularly relates to a high-efficiency aluminum slag recovery method. According to the method, on one hand, sodium chloride, potassium chloride, sodium fluoroaluminate and calcium fluoride form a separating agent, and the separating agent and an aluminum slag are stirred and mixed according to the proportion of 5:1; ifless separating agent is used, the aluminum slag is wetted incompletely, the produced oxycompound is high, and the viscosity is high; if excessive separating agent is used, the aluminum slag cannot berecovered; and through setting the proportion to be 5:1, the occurrence of the phenomenon that the separation and the recovery of the aluminum slag are influenced by the separating agent is avoided,the recovery rate of aluminum is improved to 96 percent from 70 percent, and the aluminum recovery efficiency of the aluminum slag is greatly improved. On the other hand, through the matching of a heating block and a pump, the temperature of a tank is kept to range from 650 to 680 DEG C, so that the separating agent sufficiently produces reaction on the aluminum slag; and meanwhile, hot air extracted by a pump is used for drying the mixed aluminum slag, and the mixed aluminum slag is prevented from adhering, so that the aluminum slag separating and recovering effect is improved.