Grey emergency command system that contains randomness
fuzziness
certainties
uncertainties and incompleteness. This paper
for the purpose of an optimal contingency plan
uses gray correlation analysis of the emergency response command system indexes for data analysis. It first defines the gray correlation analysis method to calculate the best assessment of each of emergency index vector sequence
then builds a system of gray correlation matrix to calculate the weight value of each index
and finally gets an effect level gray correlation and contingency plan through calculation to design an optimal contingency plan
which can play a decisionmaking role in planning a more objective and reasonable emergency command system.