The location selection of the emergency material storage service depot is of great importance for the relief work in earthquake.The location selection is uncertain.The intuitionistic fuzzy number and the interval-valued intuitionistic fuzzy number are introduced.The relationship is also analyzed.The score function and the accuracy function of interval-valued intuitionistic fuzzy number are presented.Based on these two functions

a method for ranking interval-valued intuitionistic fuzzy numbers is given.The running time affected by many factors is assumed as interval-valued intuitionistic fuzzy information.The location selection model for earthquake emergency service depot is built

involving interval-valued intuitionistic fuzzy factor in constraint function.The algorithm

which is based on the ranking rule of the interval-valued intuitionistic fuzzy number

is presented.And then the optimum location selection is obtained.The validation of the proposed method is revealed through a real case study.