The very small aperture laser (VSAL) is a important light source used in the near-field optical storage system. So it is necessary for studying the near-field property of VSAL s output light. As the output region of the VSAL. the optical characters and the intensity distribution in the near-field of the metal film with micro-aperture have been numerical simulated using two dimension nonlinear FDTD (2D-NL-FDTD) method. Through analyzing the results from the viewpoint of the optics, the possible application in the near-field optical recording have been discussed, and some data indicating the near-field optical characters of the output light have been given.