Obstetric shock is divided into the shock compensation phase, the shock suppression phase, and the shock failure phase. A weak or even not clearly palpable pulse is a symptom of the shock suppression phase. Although the causes of various kinds of shock are different, there are relative and absolute insufficient effective circulating volume, pathophysiological changes of microcirculation, with the process of shock and different obstacles, so the principle of treatment for shock should remove the causes of shock as early as possible, replenish blood volume, correct microcirculatory disorders, improve cardiac function, and restore normal body metabolism. The main cause of the condition is shock. Obstetric shock is mainly hemorrhagic shock, followed by infectious shock and other special causes of shock. Skin, mucous membrane bleeding spots or gastrointestinal bleeding, indicating that the disease has developed to the stage of diffuse intravascular coagulation, if active treatment still no progress, can be secondary to respiratory distress, if the arterial blood pressure drops below 8kPa (60mmHg), although pressurized oxygen symptoms can not improve, oxygen partial pressure can not be increased, suggesting respiratory distress syndrome and other organ damage, will enter the stage of failure. Although the causes of various kinds of shock are different, there are relative and absolute insufficient effective circulating volume. Pathophysiological changes in the microcirculation vary with the progression of shock.