The present paper is a teaching experiment, during whichKrashen' Input Hypothesis was integrated with the context ofChina's college English teaching, and three aspects wereemphasized: increasing the comprehensible input, emphasizingvocabulary and structure, and lowering the students' affectivelevel. The results after a one-term teaching experiment indicatedthat the experimental class significantly outperformed thecontrol class, which proved that Krashen' Input Hypothesis hassome positive impact on our foreign language teaching. Theauthor points out, in the meantime, that we should by nomeans mechanically adopt it. The paper then puts forwardseveral implications for China's English teaching.