The invention provides a leaching process for nickel-containing eluvial ores. The process comprises the following steps of: dividing the nickel containing eluvial ores into high-iron eluvial ores and high-magnesium eluvial ores; performing acid leaching of the high-iron eluvial ores to obtain leaching liquor of the high-iron eluvial ores; adding a jarosite precipitation agent into the leaching liquor of the high-iron eluvial ores, adding the high-magnesium eluvial ores into the leaching liquor of the high-iron eluvial ores for acid leaching so as to make ferric iron precipitated in form of iron alum and obtain the leaching liquor of the high-magnesium eluvial ores; adding an oxidant to the leaching liquor of the high-magnesium eluvial ores so as to convert a small amount of ferrous iron into ferric iron, and adding limestone so as to precipitate the ferric iron; and performing solid-liquid separation of the leaching liquor, obtained after precipitation, of the high-magnesium eluvial ores to obtain leaching slag and leaching liquid containing soluble nickel salt. By the leaching process of nickel-containing eluvial ores, provided by the invention, the iron content in the leaching liquor of the nickel containing eluvial ores is lowered, and the needed quantity of the neutral agent is also reduced.