Taking the temperature effect and geometric nonlinearity into consideration, the nonlinear vibration equation of monolayer cable net for pointsupported curtain wall was derived by assuming the net as a continuum membra. By the Galerkin method, the partial differential equation was transformed into ordinary differential equation which was solved with LP method and KBM method. Taking the monolayer cable net for pointsupported curtain wall of Zhongguancun Culture Building as an example, the effects of temperature, amplitude, initial displacement and exterior excitation on the nonlinear vibration were discussed. The example indicates that the temperature has great influence on the nonlinear vibration of monolayer cable net and the vibration of monolayer cable net for pointsupported curtain wall shows a hard spring characteristic.