To provide a method by which a high grade zinc compound having low moisture content can be efficiently separated and recovered from a substance containing heavy metals including zinc.

The method for treating the substance containing heavy metals including zinc comprises the following steps: (A) an acid leaching step where acid leaching is applied to the substance containing heavy metals including zinc to obtain a zinc-containing acidic aqueous solution; (B) a first alkali leaching step where the temperature of the acidic aqueous solution is held at ≥30°C and also the pH value of the acidic aqueous solution is adjusted to ≥12.0 to obtain alkaline slurry containing zinc-containing precipitates; (C) a second alkali leaching step where the temperature of the alkaline slurry is successively held at ≥30°C and also the alkaline slurry is formed into alkaline slurry of pH 9.0 to 11.5 to further precipitate zinc; and (D) a zinc recovery step where the alkaline slurry obtained in the step (C) is subjected to solid-liquid separation to obtain a solid content containing zinc.

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