根据对河南省农区十村11251 户农户的入户调查资料，认为农民外出务工的数量与规模是经济因素、家庭 因素和环境因素综合作用的结果。多元回归模型显示：①外出务工经济收益与成本、家庭人口状况、农户家庭经营 地、农户家庭生活性支出等正向影响农户外出务工的规模；②农区家庭劳动力文化状况中，初中及以下学历人数正 向影响农区外出务工的规模，高中及以上学历人数负向影响农区外出务工的规模；③环境因素中，经济水平因子对 农区外出务工规模的影响是正向的，地形、通达性和土地类型等三个因子对农区外出务工规模的影响是负向的。

This paper analyzed a large number of investigation files, which come from the rural area of ten villages, Henan province. Result of this analysis indicated that the number and scale of rural households'migration employment is a synthetical outcome, which is affected by economic factors, family factors and environment factors. The Optimal Multiple Regression Model shows that several factors have a heavy influence on the migration employment of rural households in Henan province. First, there is a positive impact between the scale of migration employment and the benefit of migration employment, the cost of migration employment, the population statement of rural households, the expense of rural households, and so on. In addition, people who have junior high school degree will bring a forward- looking effect on the scale of migration employment, while senior high school degree or upwards will produce a negative effect on the scale of migration employment. Third, as far as the environment factors are concerned, we can get the conclusion that the development level of economy has a positive impact on the migration employment. Terrain, reachability and the land use style have a negative impact on the migration employment.