The invention discloses a leaching remediation method for antimony-polluted soil. By means of the leaching remediation method for remedying the antimony-polluted soil, the problem that in the prior art, a leaching technology does not have the antimony-polluted soil remediation function is solved. The leaching remediation method comprises the steps that (1) the antimony-polluted soil and quartz sand are mixed and stirred to be even, and soil to be leached is formed; (2) the soil to be leached is arranged in air to be oxidized; (3) the oxidized soil to be leached is soaked with a leaching agent, specifically, the leaching agent is a weak alkaline solution with the ph value being 8.1-10; and (4), the leaching agent is filtered out from the soil, the antimony content of the soil is detected, the step (2) is conducted repeatedly if the antimony content of the soil does not meet the acceptable standard, and the treatment process is finished if the antimony content of the soil meets the acceptable standard. By means of the leaching remediation method, the antimony-polluted soil can be remedied efficiently, the soil quality can recover, and enrichment of the antimony element can be achieved.