Space-resolved luminescence spectra of excimer laser ablation of high Tc Y-Ba -Cu-O superconducting target was studied with WP4-optioal multichannel analyzer. In the vicinity region of the target surface (d<0.35mm), a wide continuum spectrum with salf-absorption lines due to the electronic transition from the ground states of Y, Ba and Y+, Ba+ was observed. The excited state emission spectrum lines of atoms, ions and moleoulae were detected only at the distance larger than 0.35mm. These experiment results support the dynamic explanation of explosion and ejecting molecular cluster or solid fragments on laser ablation.