A spectrophotometer study of zinc-dithizonate complex in aqueous phase in the presence of sodium dodecyl sulphate (SDS) anionic surfactant is reported here. The presence of micellar system avoids the previous steps of solvent extraction and reduces the cost, toxicity and enhance the molar absorptivity. The method obeys Beer's law in the concentration range of ­­­­­­­­­­­­­­­­­­­­­­­–l.5 x 10-5 -1.5 x 10-4 M. The detection limit of Zn(II) is 3 X 10-6M. The molar absorption, sensitivity, artical micelle concentration, dithizone and metal ion concentration are studied and discussed. The method has been applied to the determination of Zn(II) in pharmaceutical preparation and vegetables. The present method was also compared with FAAS method and the results are comparable. There is no significant difference between the two methods at 95% confidence interval.