Method for treatment of arsenic contaminated soil

The invention discloses the treatment method of arsenic pollution soil, comprising the following steps: 1 adding biology fertilizer into the soil polluted by arsenic; 2 adding methilanin and aminoglutaric acid; 3 adjusting the soil moisture percentage; 4 adjusting the pH between 5.3 and 8; 5 making the anaerobic environment. The traditional method can only reduce the arsenic content in soil, not remove it. Utilizing the vaporization of edaphon, the method can remove the arsenic. The accumulator plant method needs plant and harvest plants, but the biology volatilization technique needn't plant and harvest plants.