Abstract: In this article, we investigate numerically the nonlinear scatter of intense laser pulses with different frequency and intensity by the electron bound in one –dimensional potential with different deepth and width. Two facts are found: (1) For the given laser pulse, the tighter the potential bound the electron, the difficulter scattering harmonics extends to high order; (2) For the same potential and two laser pulses with identical intensity, the high frequency laser is easier to generate harmonics than the low frequency laser, but the harmonic order number is not higher.