Two-dimensional (2D) wavelet transform is applied to phase analysis of spatial carrier-fringe patterns. Hilbert transform is firstly performed on carrier-fringe patterns to get the complex signals,in which the phase information is included. And then two-dimensional wavelet transform is carried out on the signals. Finally,the phase information demodulated by the height of object can be gotten from the wavelet transform coefficients at the wavelet ridge position. The result performs better than that of one-dimensional wavelet transform method,especially when there is much noise in the fringe patterns. Computer simulation and experiments verify the validity of the proposed method.