Previous works concerning the form of exclusive interaction have focused on practices in which the excluded persons are deprived of positions as the “subject”. From this perspective, it is difficult to criticize ambiguous exclusion. Focusing on the fact that the normality of the excluded people is constructed through mutual interaction, I describe the methods of exclusion that are used even when the position as the “subject” is maintained. In order to criticize such ambiguous exclusion, we should be aware that there are alternative methods by which participants can construct mutual normality without exclusion and advocate an interactional culture where ambiguous exclusion is considered to be improper.