In order to verify the function of health management of Integrated Modular Avionics (IMA),a method of fault injection through AFDX network is proposed.This method contains a way to configure fault data and a data transmition strategy to solve the mismatching problem between the data rate and the period of the timer on PC.The environment for fault injection is established and the corresponding software is developed.The experiments conducted verifies the validity of the way and the strategy.