Forgery which is a major crime of depriving public trust and heckle in economic system of a country, is considered as one of the factors of social inefficiency in a community.Committing the crime of forgery in different aspects and various levels is being evolved by technology development, international and domestic communications and exchanges, therefore in modern technique of preventing forgery, determining security and safety indicators of forgery in making documents seems to be one of the essential and efficient factors.The present research which its method is descriptive, aims to study the level of the effect of four main factors in making valuable documents (e.g. paper, design, print and attachable items) in preventing forgery using questionnaire.The main aim of this research is identifying the modern techniques of preventing forgery and studying the main and fundamental factors in paper, design, print and functions of attachable items to the documents as security components in forgery prevention. The statistical population of this research consists of 41 experts in the area of forgery and producing security documents and the survey is done in total number manner.The results indicate that utilizing the four factors mentioned above is an important and efficient indicator in forgery prevention. Finally, developing and enhancing the national committee of forgery prevention is the most significant long-term strategic suggestion for coordination and policy making in preventing and fighting against forgery along with situational prevention been presented.