At present, the domestic's emergent disaster relief system is mainly focusing on fire extinguishing and preventing system. However, the major municipal construction projects involving special expertise on how to handle emergent disaster are often beyond the fire extinguishing and preventing system. For instance, equipments and methods of rescue task to the damage caused by foundation excavations are extremely different from the ones in fire extinguishing and preventing system. Thus, it is necessary to set up construction contingency plans dealing with accidents at construction sites to effectively minimize the cost of the damage. This study simulates the disaster at the construction site of the Red Line Section CR5, the Kaohsiung Metropolitan Mass Rapid Transit Systems. Assuming all units practice the contingency relief task well, they would restore the situation back to normality within a short period of time and with integrity. Meanwhile, the Bureau of education, Kaohsiung City Government? Ought to frequently call for residents to participate in the anti-disaster and rescue training to learn how to protect themselves.