The PTDRT model as prediction techniques of desalinization in reclaimed tidelands was developed and verified in order to be applicable to reclaimed tidelands at the beginning stage. In this model, the changes of salt concentration during desalinization, the water requirements and period required for desalinization, were simulated according to soil properties and desalinization methods by regression analyses. This program was also designed to systematize input data and analysis data associated with desalinization, and to confirm the results by a graphic form. All input data and the results are able to be printed after the form of a typical report.