With the extensive deployment of optical communication equipment in different regions and environments, there are many failures of optical module due to sulfurization corrosion caused by the unqualified environment of the equipment room. Therefore, the demand for the work life prediction of optical module in sulfur-containing environment is rapidly increasing. In this paper, we propose a method to establish a life prediction model for the resistors and beads inside the optical module that are corroded in the accelerated corrosion condition. In this method, Weibull distribution is used as the reference failure function, and the same environmental stress or different environmental stress is used as the covariate. Then the parameters of prediction model are analyzed by using the failure rate data of resistors and beads in the accelerated test. It shows that the accelerated test results are consistent with the failure data in the field. Therefore, the model can meet the needs of life prediction of optical modules at the communication office.