In recent years, English has become one of the most popular languages in all over the world and in Vietnam as well. Besides, English plays an important role in the period of intergration. Thus, it has become a second language in Vietnam. Of the four basic skills in English, speaking seems to be paid great attention by ESL learners. Nevertheless, there is a large percentage of Vietnamese people who speak English making mistakes with pronunciation. While learning English, there are a number of problems relating to pronunciation errors that ESL learners tend to make: intonation, word, sentence stress, especially ending sounds. However, Vietnamese students who study English have their own problems. In order to study these problem in depth, this research will go into details of pronunciation errors concerning ending sounds of English non-major 1 st year students at Haiphong Private University.