In order to improve college students' English reading ability, an authentic environment is proposed to be built for the teaching based on authentic assessment. Firstly, based on the authentic assessment theory, the question of how to carry out reform in teaching in the process of developing college students' English reading ability is discussed. Then, taking the communication in daily reading into consideration, a method is proposed to build the authentic assessment environment. Finally, some problems worthy of attention are put forward. Building authentic environment according to the real environment in daily reading will provide foundation for carrying out authentic assessment in developing college students' English reading ability, thus improving the quality of teaching.