The symphysis pubis is a nonsynovial amphiarthrosis in which the bodies of the two pubic bones are united by a fibrocartilaginous disk. This forms subsidiary tie arches that augment femorsacral arch in the erect position, ischiosacral arch in the sitting position. In normal state the symphysis is strong enough not to be separated. We experienced 5 cases of separated symphysis pubis developed during labor at the Catholic Hospital from January 1987 to December 1988. The duration of follow-up was between 12 and 19 months without any residual symptom after conservative treatment.