Non-invasive low-risk 32-week examination of the right side of the foot inversion is considered to be caused by genetic factors, fetal position abnormalities and so on. 1. Genetic factors: clubfoot is a genetic disease, belonging to polygenic inheritance, non-invasive examination can screen out most of the genetic diseases, but the accuracy rate is not 100%, and can not completely exclude genetic diseases. This type of deformity belongs to abnormal bone alignment and requires surgical correction. 2. Fetal position abnormality: the right side of the foot inversion may also be the foot in the uterus for a long time compression caused by the shape of the anomaly, this situation can not be ruled out through the non-invasive examination, this kind of child is easier to be corrected after birth. Children with entropion can be treated after birth, and most of them will have a good recovery after treatment, do not worry too much, so as not to affect the growth and development of the fetus.