Thrush is a Candida infection that infects the oral mucosa, resulting in white pseudomembranous lesions on the oral mucosa. The reason for the recurrence of thrush is to clarify whether it is a recurring infection or an infection that has not been cured and has been repeatedly delayed. It is generally recommended to standardize the treatment, such as topical antifungal drugs, the course of treatment should be sufficient, and consolidate a week after the cure. In case of recurrent attacks, it is necessary to improve the examination to see if the baby has any immune deficiency. Nipple teats should be cleaned and de-fungalized to reduce recurring thrush attacks.