in this article efficient means and sources used in topical exegesis of the quran are treated and the roles of the quran, traditions, interpreters’ opinions, language, history, intellect, experimental sciences...., in the procedure of topical exegesis ha ve each been reviewed. next, various methods adopted by 14th century interpreters in topical exegesis and the viewpoints of researchers of the quran in this regard have been critically reviewed. subsequently each of ordinal-topical, scietific-topical, an d literary-topical exegesis methods has been reviewed and then, slippages and abnormalities in the process of topical exegesis of the quran, such as scientism (science-centeredness), pragmatism, and impressionability by alien thought in its various forms , have been analysed and measured.