Historical authentic information and statements constitute the most important part of the historical analysis. Nevertheless, sometimes the basic information of a historical research is the pseudohistorical propositions which historians take them as authentic historical propositions, and as a result, the historical analysis become distorted. This study tries to answer two main questions: 1-What is the most important factor in positing pseudohistorical propositions? 2-What is the proper approach to distinguish historical propositions from pseudohistorical ones? The study offers that Hadith and Kalam are the main sources of pseudohistorical propositions. By the way, to distinguish historical propositions from pseudohistorical ones, one needs to evaluate historical sources carefully and to assess the origin of beliefs in Kalam properly. My approach in this detection is inductive, that is, the characteristics of pseudohistorical proposition, mentioned in each case, is detectable by investigate their original sources in history and theology.