With the development of globalization,English has become one of the most popular languages in the world.In many non-English-speaking countries,English teaching and learning occupies a very important position in their foreign language education.Grammar teaching is an indispensable part of English language teaching in EFL context like China;however,in recent years,grammar teaching has been more or less neglected.Without doubt,grammatical competence is one of the major factors that influence reading efficiency.This paper mainly focuses on examining how a learner’s grammatical competence influences his or her reading comprehension,starting with a comprehensive review of the grammar-related factors involved in reading comprehension. With the development of globalization, English has become one of the most popular languages ​​in the world. Many English-speaking countries, English teaching and learning occupies a very important position in their foreign language education. Gram teaching is an indispensable part of English language teaching in EFL context like China; however, in recent years, grammar teaching has been more or less neglected .Without doubt, grammatical competence is one of the major factors that influence reading efficiency.This paper mainly focuses on examining how a learner’s grammatical competence influences his or her reading comprehension, starting with a comprehensive review of the grammar-related factors involved in reading comprehension.