Under the field testconditions，the composite passivator A1(vermiculite and ferroussulfate)，A2(nano -activated carbon and silicon potassium calcium fertilizer)，A3(volcanic stone and calcium magnesium phosphate andorganic fertilizer)and B1(leaf surface silicon fertilizer)were studied by being applied separately or in combination asA1B1，A2B1 and A3B1 to determine their remediation effects on arsenic -contaminated paddy soil and the accumulation ofarsenic for rice in Gejiu mining area of YunnanProvince.The results showed that the soil pH value increased with differentdegrees after the addition of soil passivationagent.The contents of arsenic in non -specific adsorption and specific adsorptionstates decreased，and the regulation effects of combined regulators were better than those of the single passivatingregulators.Different treatments had different effects on riceyield.For the treatment of combinedA1B1，A2B1 andA3B1，the yield ofrice increased by28.0%，27.2% and29.7%，respectively.The effects of combined regulation on yield increase were better thanthose of the singleagents.The contents of arsenic and inorganic arsenic inroots，stems andleaves，brown rice of differenttreatments decreased to different extents，for the combined treatmentA2B1，they were reduced by 60.3% and77.1%，andthe effect was obviously better than othermeasures.Under differenttreatments，the transport coefficient from roots to stemsand leaves，stems and leaves to brownrice，roots to brown rice were significantlyreduced，the effect of combined treatmentA2B1 was better thanothers.Insummary，adopting soil passivation -agronomic joint controlmeasures，basal applicationwith combined passivation of vermiculite and ferroussulfate，at the sametime，spraying foliar silicon fertilizer in rice fillingstage and heading stage(A2B1 jointregulation)could effectively repair the arsenic contaminated soil in Gejiu miningareas， and effectively reduce the arsenic and inorganic arsenic in the brown rice and improve the safety and quality of rice in theminingareas.This technology could be applied in arsenic contaminated farmland.