The invention discloses a method for complex-precipitation aluminum removal from rare earth feed liquid. Heptanaphthenic acid is adopted as a complex-precipitation agent to treat a rare earth solution, and aluminum ions contained in the rare earth solution are removed from the rare earth solution in a precipitation manner; the using quantity, the reaction temperature, the solution pH value and thereaction time of the complex-precipitation agent are controlled, and therefore removal rate of the aluminum ions in the rare earth feed liquid can reach 90% or above, and the rare earth loss does notexceed 5%; and coagulation is carried out by adding an anionic surfactant solution, and the aluminum ion removal rate is further improved. Compared with the prior art, the method for removing aluminum from the rare earth solution by using the complex-precipitation is low in equipment requirement, operation is simple, precipitate is easily filtered, a recovered product can use the complex-precipitation agent in a circulated manner through regeneration, closed loop circulation is achieved, the environment influences are reduced, and the treating cost is low.