Teaching grammar is considered as one of the most important subjects in second/foreign language curriculums and there have been many disagreements and disputes about it over the past 40 years. During this period, the position of grammar in the language learning programshas been frequently changed. Some approaches have considered the grammar as the central core of the second language teaching, and some have known it as the most important barrier to progress in teaching the second language. The current research investegates the situation of grammar, by reviewing the opinions of individuals as Alan, Dirven, Celce-Murcia, Krashen, Odlin, Ellis, Larsen Freeman, etc., it has returned towards a logical focus on teaching grammar, a focus that is called as pedagogical grammar. Nowadays, the pedagogical grammar is considered as an independent form of grammar based on its particular audience, different teaching method and adaptation to the curriculum and second language teaching approaches.