Thrush in infants generally relieves within a week, but the full recovery period depends on the baby’s own immune system and the medication used. Since thrush is a fungal infection, predominantly caused by the Candida species, which is a conditional pathogen. If a baby has low immunity and a disrupted intestinal flora balance, it can lead to recurrent episodes of thrush, facilitating the growth and infection of fungi. Treatment can be administered using sodium bicarbonate solution for cleaning, along with antifungal agents and oral probiotics, which often alleviate symptoms within a week. However, if the baby's immunity is not effectively improved later, and the imbalance of the body's flora is not effectively controlled, recurrence is likely. Therefore, the treatment of thrush is comprehensive and not solely reliant on medication. (Medication should be used under the guidance of a physician.)