Shahnameh is the greatest epic work of Iran. Ferdowci versified it during thirty three or thirty five years. He composed this work in fluent persian language. In his acount and description about heroes, historical and ancient events he used SIMILE. By studying and comparing these SIMILEs with these in
next centuries, we nealize the chenges and development of imagery in this field. In this research we examine, explain all SIMILEs and classified them.