Provided are a negative electrode for a lithium secondary battery and a method of manufacturing the same. The negative electrode for a lithium secondary battery according to an embodiment of the present invention includes a silicon-based negative electrode active material including iron and aluminum, wherein in ICP analysis of a negative electrode active material layer including the silicon-based negative electrode active material, contents of elements in the negative electrode active material layer satisfy the following Relations (1) to (3):

A/(B2+C2)≤4,500  (1)

5≤B≤1,500  (2)

3≤C≤1,000  (3)



wherein A is a Li content in ppm, B is an Fe content in ppm, and C is an Al content in ppm, based on the total weight of the ICP-analyzed negative electrode active material layer.