Abstract: Through indoor simulation, the release Law of nitrogen from soil in the riparian zone of Daqiao Reservoir is explored by controlling different environmental conditions with a single variable. The results showed that the increase of temperature promoted the release of nitrogen from soil in the riparian zone of Daqiao Reservoir, but the change of acidity and alkalinity and the agitation of constant temperature constant oscillator had no significant effect. It was found that the nitrogen content of silt soil in the dissipation zone of Daqiao Reservoir was the highest.