Abstract: In the test phase,the reliability obtained from software reliability growth model(SRGM) can not represent the real one in the operation phase because of the effect of accelerated testing.Therefore,the hypothesis that the test environment is same as the operation environment is corrected.Aiming at the delay of the correction process in the test phase,a model integrating both detection process and correction process is presented.By using different rates of fault detection,the difference between test and operation environments is reduced.Integrating the change-point technique,a new SRGM model with considering of the difference between test and operation environments(TDO-SRGM) is presented.The experiments on two open data sets prove that the proposed model has good fitting and prediction ability.