Abstract
This paper describes a basic study on evaluation method of drinking ease with biological information. The purpose of this study is to develop evaluation method of beverage containers in order to consider a feeling of satisfaction and comfortableness when drinking from the opening of aluminum bottles. Myoelectric potential as biological information is used to evaluate physically. In order to find relations among mouthful beverage amount, myoelectric potential and subjective evaluation, we have measured myoelectric potential when subjects swallowed a beverage with different opening diameter, and subjective evaluation from a questionnaire survey.