In general, keishikashakuyakuto or shokenchuto is used to treat abdominal pain. We experienced 2 cases that kanbakutaisoto were effective in treating abdominal pain, however keishikashakuyakuto and shokenchuto did not have any favorable effect on these cases. Case 1 : A 17-year-old female who consulted us because of abdominal distension and pain. We treated her with keishikashakuyakuto and shokenchuto, but they had no effect on her. As the abdominal pain was increased by anxiety, we prescribed for kanbakutaisoto to her and her symptoms disappeared after one and half months. Case 2 : A 13-year-old male who visited our clinic complaining of upper abdominal pain. He was treated with shokenchuto, but it had no favorable effect. As we knew that he had some anxiety over his club activities and school life, we changed the prescription to kanbakutaisoto, and he recovered after about 1 month. When keishikashakuyakuto or shokenchuto has no effect against abdominal pain, we posit that kanbakutaisoto is useful for the symptom if the patient has psychological problems.