The spoilal inhomogeneity of plasma soft-X-ray laser medium was observed with several diagnOStic tools at reasonable and effective arrangement. The best streak lens was uSed tO Produce homogeneity laser line focused. The experimental resultS show that the plasma medium Sauce-inhomogeneity is mainly resulted from the quality of the target material and the process of focusing. In addition, The plasma X-ray emission intensities both in spatial range and time range were different notubly at different pulse lengths of the laser beam.