Objective In order to observe the therapeutic efficacy of food control to recurrent oral ulcer（ROU）, alimentary control of certain foods was employed to relieve outbreak of ROU. Methods The kits for food intolerant IgG of certain food were used to test the intolerant food of fifty patients with ROU. Observations and assessments for alimentary control were made after three months′ treatment on these patients. Results The top three of intolerant foods were crab, egg and milk and the remission rate of ROU reached 74% after treatment. Conclusion The result of food intolerant IgG testing has certain function to alimentary control therapy for remitting the outbreak of ROU.
