The purpose of cleft palate repair is to rectify the anatomical shape of the palate; improve the physiological function of the palate, re-establish good palatopharyngeal closure, and restore the necessary conditions for normal sucking, swallowing, speech, hearing and other physiological functions. What is the best age for cleft palate surgery? The age of cleft palate repair has been a controversial issue for many years, focusing on three aspects: speech, dental and jaw development and surgical safety. In the early years, due to the backwardness of surgery and anesthesia technology, the surgery often took 3 to 4 hours and required intraoperative blood transfusion, while the anesthesia was ether inhalation or local anesthesia intensification or intravenous anesthesia with lorazepam, which was very risky. In addition, early surgery is not advocated because of the impact of early surgery on dental and jaw development. However, most doctors believe that early surgery can obtain better development of the soft palate muscle group and re-establish good palatopharyngeal closure, which helps the child learn to speak more naturally and develop normal articulation habits. Although early surgery has some effect on jaw development, it is not the only factor. Even with late or no surgery, patients with cleft palate still have a tendency to have maxillary dysplasia. In contrast, jaw dysplasia can be treated well with later orthodontic or surgical treatment. With the improvement of anesthesia techniques and surgical techniques, the age of surgery is gradually advancing. It is now believed that the main goal of cleft palate repair is to restore normal palatopharyngeal closure in order to restore the child’s normal speech, and that the effect of surgery on jaw development should not be used as a reason to delay surgery. Therefore, it is now the view of most physicians that cleft palate repair should be performed in the pre-speech period in order to provide a normal palatopharyngeal closure when the child with cleft palate begins to speak. The normal age for a child to begin learning to speak is around 18 months. Theoretically, we should give the cleft palate child a normal palatopharyngeal closure by 18 months of age. However, the patient does not have a normal closed palate immediately after surgery. It takes at least six months to recover from wound healing, scar softening, nerve conduction, and motor control and coordination, so we place cleft palate surgery six months before learning to speak, i.e., before 1 year of age. In recent years, Ysunza (2010) did a clinical study comparing the recovery of palatopharyngeal closure in children after surgery at different ages from 6 to 12 months after birth, and the result was that the earlier the surgery, the better the recovery of palatopharyngeal closure. However, on the other hand, the younger the age of surgery, the greater the impact on jaw development. Thus, the preferred age for cleft palate surgery is 8-10 months, with the aim of ensuring good speech development and minimizing the impact of surgery on jaw development.