This research investigates teachers' attitudes towards the use of a web-based online practice. During a fundamental English language course, Smart Choice Online Practice, a Virtual Learning Environment (VLE) from Smart Choice 3rd Edition coursebook, published by Oxford University Press, was presented to undergraduate students to assess students after learning LNG 101 from the usual classroom. In-depth interviews were conducted with ten English teachers at King Mongkut's University of Technology Thonburi (KUMTT) to explore teachers' attitudes after 13 weeks of the features of Smart Choice Online Practice from the teaching practice, focusing on the functions and the attitudes towards the use of Smart Choice Online Practice, including the advantages and disadvantages of using the Smart Choice online practice, and the teachers' attitudes of using the Smart Choice Online Practice. The findings revealed Teachers' positive attitudes towards the use of the Smart Choice online practice and prolong the use of Smart Choice Online Practice for the future course.