Accurate diagnosis is paramount in the treatment of all diseases. Therefore, there are objective tests for a definite diagnosis or verifying severity of various rhinologic diseases such as rhinosinusitis, olfactory disorder, and obstructive sleep apnea. However, we also should consider that these tests be conducted with cost-effective aspects, as well as the inconvenience of patients or carers through unnecessary testing. Therefore, a screening-purpose questionnaire to identify the necessary tests in a timely manner may be helpful. In addition, evaluation through appropriate questionnaires is very effective and important for the evaluation of progress observation or symptom improvement during the treatment of the disease, or for large-scale epidemiological research. Even though it may be thought that visual analogue scale (VAS) may be sufficient for each symptom measure, but in terms of assessing the quality of life of patients resulting from illness, using appropriate questionnaires is necessary for patient symptom improvement or satisfaction. Various questionnaires are used for each diseases, and each has its own strengths and weaknesses. Furthermore, since these questionnaires are influenced by different languages or cultures, it is thought that continuous efforts are needed to develop appropriate questionnaires for each situation.Therefore, during this time, we will look at the questionnaires used in various rhinologic diseases and see what pros and cons there are.