A storm surge and high wave-induced inundation model was developed in this study, which consists of the Myers-based typhoon model, a depth-averaged flow model with an one-way nesting method, the wave model SWAN and an inundation flow model using a CIP method. The influence of high wave on storm surge and inundation flow was taken into account by adding the half value of the siginificant wave height obtained from the SWAN to storm surge fields at each time step. The validity of the model was verified by comparing with the experimental result of flood inudation due to dam break and the observation data of storm surge and inundation induced by Ise bay typhoon.