Macroglossia is a relatively uncommon condition that occurs in pediatric patients for several reasons and contributes to variety of functional problems. Most of macroglossia arises from tissue overgrowth and tongue muscle hypertrophy. There are no definite guideline in prenatal management or diagnosis in this conditions. However, macroglossia is often associated with syndrome or congenital disease, prenatal diagnosis is important in early detection. There are difficulty in measurement of tongue size, and standardization. Macroglossia can be risky in some aspects, such as airway obstruction. In this review, the author suggest prenatal ultrasonographic findings of macroglossia, investigate differential diagnosis of conditions associated with macroglossia, and management in clinical situation. Macroglossia, when present, can cause a number of functional and aesthetic problems for individuals. Treatment of this problem is challenging and controversial.