Mild lateral ventricular dilatation at 32 weeks of pregnancy needs to be taken seriously, undergo examination and take folic acid supplementation as prescribed by the doctor. 1. Undergo examination: It is necessary to undergo MRI to clarify the size of fetal lateral ventricular dilatation. Generally speaking, 10-12mm is considered as mild lateral ventricular dilatation, 12-15mm is considered as moderate lateral ventricular dilatation, and more than 15mm is considered as severe ventricular dilatation, and according to the different conditions, appropriate treatment will be carried out in accordance with the doctor’s prescription. 2. Supplementation of folic acid: It is necessary to check the body’s ability to utilize folic acid in order to avoid the emergence of fetal neural tube malformation due to insufficient absorption and utilization of folic acid, which in turn induces lateral ventricular widening, and the specific supplementation of folic acid needs to be used under the guidance of a doctor in order to avoid the adverse effects. During pregnancy, pregnant women need to actively undergo all stages of labor and delivery tests, and problems need to be corrected as soon as possible.