Few reports have described the effect of phlegmfluid retention on the development of pain. We herein re port two successful treatment cases of lower leg pain using chikujountanto in consideration of phlegmfluid re tention. Case 1 (a 63yearold woman) complained dull pain in the right calf. The pain persisted despite the ad ministration of sokeikakketsuto for over two weeks. Case 2 (a 42yearold woman) suffered from right buttock pain that had developed after a traffic accident. The pain persisted even at three months following the accident. The pain in both patients resolved within one week after treatment with chikujountanto, which was given on the basis of the patients' insomnia, thickened yellow fur on the tongue, and pain in the gallbladder meridian. We concluded that the concept of phlegmfluid retention should be considered for differential diagnosis when we treat pain. phlegmfluid retention, gallbladder meridian, leg pain, chikujountanto