Mining method of thin vein

The invention relates to a mining method of a thin vein. The mining method of the thin vein comprises the following steps that a, a concrete bottom (20) is arranged in a bottom roadway below an ore block (10), a chute is arranged in the concrete bottom, an ore drawing space (31) is formed below the concrete bottom, and an operation space (32) is formed between the concrete bottom and the ore block; b, blasting layer by layer is performed from the bottom of the ore block; b1, after blasting of each time, a draw shaft (41) corresponding to the position of the chute is heightened, ore (11) is drawn to the ore drawing space through the draw shaft, and a filling area is formed above the concrete bottom; b2, a pedestrian road (50) on the side edges of the draw shaft and the ore block is upwardssupported; and b3, foam concrete (60) fills the filling area. Thus, when mining is performing aiming at the thin vein, the foam concrete is selected for filling a mined ore area so that the safety ofstope stoping operation ca