To counter the problem of the numbers and high maintenance cost of water release gate of Dadingzishan navigation-power junction in winter,we carry out stress detection on water release radial gate in the freezing period.By analyzing the stress data obtained,we confirm that the water release radial gate which bears ice load directly does not produce significant deformation.The result provides a data support for the non-measure over-winter practice of the water release gate of Dadingzishan navigation-power junction.