The time-dependent-wave-packet method has been applied to calculate the photoelectron spectra of Br-2 molecule with zero time delay. Meanwhile, Br+ ion that mainly resulted from the dissociation of Br-2 (C-1 Pi(u)) can be seen in the photoelectron spectra of Br2 molecule. We presume that more Br atoms will be ionized later, as the dissociation is nearly complete. In addition, it is found that Br-2(+)(X-2 Sigma(+)(g)) has the largest increasing rate as the increase of the laser intensities. (C) 2007 Elsevier B.V. All rights reserved.