In the context of new-type urbanization，this paper studies the impact of land requisition on labor migration. Based on the data from China Household Finance Survey from 2011 and 2013，we employ the Difference in Difference methods of OLS and kernel matching to empirically test the hypotheses related to labor migration. The results indicate that land requisition would promote labor migration through easing the channel of financial constraints rather than the mechanism of land tenure security. Specifically，those households who are originally from West China，use cash option for compensation，and are confronted with credit constraints benefit more from land requisition and are more likely to migrate with longer distances. Our paper combining the two types of literatures on land requisition and labor migration，can theoretically test the validity of financial constraint theory in the field of land requisition，and also make suggestions for the government regarding how to enhance the employment guidance and ease the conflicts of land requisition. New population trend calls for better attention to the social governance problem for land requisition.