Chapter four introduce a data regression model to prove the conclusion.Through this model, the income, farm cost ,transfer cost and other involves factor are proved have influence to labor transfer.

• 第四部分介绍了一个回归数据模型来验证理论结论可靠性，通过这个计量分析主要验证了收入，务农成本、进城费用及其相关因素对劳动力转移的影响。