Question one of the four types of sentences classified according to the purpose of speech which is commonly used in the communication process. In teaching Vietnamese as a second language, questions play a significant role. This article focuses on questions with modal particles found in VSL textbooks at intermediate and intermediate levels. The purpose of our study is to provide feedback and recommendations on the introduction and use of questions with modal particles in VSL textbooks, based on the survey results. The primary research methods used are description and comparison, along with statistical and classification techniques. The research materials are questions found in VSL textbooks. The outline of the research includes: 1. Introduction. 2. Questions and questions with interrogative modal particles in Vietnamese. 3. Survey on the use of questions with interrogative modal particles found in VSL textbooks at elementary and intermediate levels. 4. Survey on the distribution of questions with interrogative modal particles in VSL textbooks at elementary and intermediate levels. 5. Conclusion.