Abstract: Abstract: Regulation and control of heavy metal input and output in paddy soil-rice system are of great significance to rice pollution control and safe production. The effects of straw removal, truncation of atmospheric sedimentation and clean water irrigation on the accumulation and migration of heavy metals in the paddy soil-rice system were investigated with the arrangement of field experiments from April to October in 2016, which selected the typical rice fields contaminated by atmospheric sedimentation in the town of Leidashi, located at the downwind direction of an industrial area in Zhuzhou City, Hunan Province. The results showed that straw removal, truncation of atmospheric deposition and irrigation with clean water all could significantly reduce the available content of heavy metal in soils and heavy metal accumulation in rice. Compared with the control of rice straw returning, the content of available Cd (cadmium) and Pb (plumbum) in the soil under straw removal treatment decreased slightly except the effective Pb content of the soil after planting early rice. Under this treatment, the Pb content in the brown rice of early rice and the contents of Cd and Pb in brown rice of late rice were significantly decreased, which were reduced by 3.6%, 10.4% and 32.4%, respectively. Under the treatment of straw removal + truncating atmospheric deposition treatment, the contents of available Cd and Pb in soil decreased to different extents. The soil available Pb content decreased significantly. Except the Cd content in root and brown rice of early rice, the contents of Cd and Pb decreased significantly in the organs of early and late rice varieties. The average content of Cd and Pb decreased by 32.8% and 36.8% respectively in rice roots and by 32.2% and 24.8% respectively in rice stems, and the cumulative amount of Cd and Pb in brown rice of late rice significantly decreased by 66.3% and 22.2%, respectively. Under straw removal+clean water irrigation treatment, the available Cd and Pb content of the soil reduced by 11.7% and 15.9%, respectively. The content of Cd and Pb in different organs of rice decreased to a large extent. The content of Cd and Pb decreased by 38.34% and 30.35% in roots and 43.4% and 13.2% in stems, respectively. The cumulative amounts of Cd and Pb in brown rice of late rice decreased by 39.4% and 67.2%, respectively. Through analysis of the accumulation and transport of Cd and Pb at the aboveground part of rice, it was found that the removal of straw of rice combined with interception of atmospheric deposition or clean water irrigation could significantly reduce the accumulation of Cd and Pb in the aboveground parts of rice. The Pb contents in brown rice were lower than the National Standard of Pollutant in Food of China (GB 2762-2017) under the straw removal+clean water irrigation treatment in the late-rice paddy field. The above results indicate that the control measures such as control of regional air pollution, purification of farmland irrigation water, combined with the removal of straw or other measures outputting soil heavy metal of polluted farmland, can effectively achieve the safe use of contaminated farmland and guarantee the rice safety in production.