The script performs significant role in learning and reading process of any language. Siraiki language has taken centuries to evolve to the present form. It has been adopting different scripts with the passage of time. Its initial phase of script may be seen in the form of Indus valley script. Afterwards, this language has been read and written in Dev Naagri script, Urd Nagri script and Landa Script. The present dictation and script of Siraiki language are derived from Arabic script. Yet it is much influenced by Urdu and present Sindhi alphabetic signs. The investigative analysis of present Siraiki script and its gradual evolution era has been discussed in this article.