The recent techniques of mural paintings in Iran have changed during several years but as a research projects we try to renew the old method of paintings again. So we try to find and determine one of old methods of mural paintings in Iran, specially from Safavid era so called "Tala Chasban", The most important thing is that the support and coating soft layer in Iranian mural painting is not like European fresco technique. The most popular masonry for Iranian artists was gypsum not lime and they paint on dry support layer. Also it seems a lot of people in recent years are not familiar with the methods and techniques of these valuable art works. In the other hand with recognition of the mural painting's method, we can understand the advantages and disadvantages of method too, so these results will be useful for conservators, restorers and specially contemporary artists and painters. In this article we want to introduce one of the most important Iranian techniques for mural paintings, and for this reason we will show, step by step, all parts of creation the mural painting, materials and method of their preparation in old method. The results will be completed by Micro Raman and XRF (X-Ray Fluorescence) analysis on some historical samples