The pregnant and maternal women are the special group and the  adult emergency triage  scale can't be directly applied for them. It is highly necessary to establish an obstetric-specific emergency triage scale which is suitable for the  pregnant and  maternal  women.  The  obstetric  emergency  triage  scale  is  a part  of the  emergency triage  scale organized  by the  National  Health  Commission of the  People's  Republic  of  China and  drafted  by the leading of the Second Affiliated Hospital of Zhejiang University School of Medicine. The scale includes the most of common obstetric emergency conditions and details the classification indicators of each level of obstetric conditions.It provides an objective,quantitative and reliable standards for clinical triage nurses.