A multicomponent fuel model, which estimates the gas-liquid equilibrium and property values of the fuel mixture, can represent the fuel concentration distribution characteristics of each component of a multicomponent fuel spray. In this paper, the WAVE-MTAB model is applied to a breakup model in order to simulate the spray characteristics of a twocomponent fuel spray under high pressure injection pressure conditions. As a result, the two-component spraying behavior and the fuel concentration distribution of each component in a multicomponent fuel spray under high pressure injection conditions could be reproduced in comparison with the experimental results.