A study on surface seepage effects on stability of borrowed soil in ecological slope. Stability tests of the soil without seepage and with surface seepage which use the same soil are carried out. It is found that the failure mode of the soil is a translational sliding surface parallel to the original slope surface along the upper surface of plane nets via stability tests with surface seepage; it is the same as the failure mode of stability tests without seepage. Stability tests of the soil with surface seepage testify that the charts
developed by YANG Jun-jie are effective. It is known from test results and theoretical analysis that stability of borrowed soil with surface seepage is remarkably reduced than that without seepage.