There are many kinds of Uloom e Hadith. Imam Neshapori has discussed fifty two ulooms in his book "Maarifat Uloom ul Hadith" and the number of ulooms described by Ibn Us Salah, Imam Novvi and Ibn e Mulaqan is sixty five in their books Muqadama Ibn us Salah", "Al Taqreeb fan e usool ul hadith" and "Al Muqnio fi Uloom ul Hadith" respectively. Similarly Allama Siyuti has mentioned ninety three uloom in his book "Tadreeb ul Ravi". In his respect Allama Siyuti writes: "اعلم أن انواع علوم الحدیث کثیرۃ لا تعد"There are numerous kinds of Uloom e Hadith that cannot be counted. Allama Hazmi Describes his viewpoint in such a way: "’علم الحدیث یشمل علی انواع کثیرۃ تبلغ ماءۃ، کل نوع منھا علم مستقل، لو انفق الطالب فیہ عمرہ ما أدرک نہایتہ" There are so many types of Uloom e Hadith that reach up to hundred. Every type is complete in itself. A student can never reach its extreme even after consuming his whole life in its study.One of the most important type of Uloom e Hadith is "Ilm e Mukhtalif ul Hadith", Which is being introduced in this article.