The invention relates to the technical field of lithium extraction of ore, and particularly discloses a lithium-mica heap leaching method. The lithium-mica heap leaching method comprises the followingsteps of 1, grinding ores; 2, mixing with acid; 3, mixing with water and silicofluoric acid; 4, performing curing; 5, performing crushing and heaping; 6, performing heap leaching; and 7, collecting aleachate. According to the lithium-mica heap leaching method, high-temperature calcination defluorination is not needed, low-temperature roasting is not needed, pressure leaching is not needed, equipment investment is reduced, energy consumption is low, environmental pollution is small, and the effects of being simple and efficient are achieved.