It’s important to master a foreign language, English in particular. But the problem is how students should learn in order to communicate well with the native speakers and even become members of the target language community. The author narrates two incidents related to the Chinese study and English study experiences, pointing out that language study can’t be separated from culture study. In line with the research results by some language experts about culture, language is the carrier of culture as literature is accomplished through languages, therefore language learning and teaching in isolation from culture is impossible. The author argues that language should be taught and learnt in a cultural approach. But as a sword with double blades, cultural approach may lead to culture invasion, culture inequality and the loss of culture diversity. It’s important to master a foreign language, English in particular. But the problem is how students should learn in order to communicate well with the native speakers and even become members of the target language community. The author narrates two incidents related to the Chinese study and English study experiences, pointing out that language study can not be separated from culture study. In line with the research results by some language experts about culture, language is the carrier of culture as literature is accomplished through languages, therefore language learning and teaching in Isolation from culture is impossible. The author argues that language should be taught and learned in a cultural approach. But as a sword with double blades, cultural approach may lead to culture invasion, culture inequality and the loss of culture diversity.