With the rapid development of various types of boat equipment,the application of new technology,the mission system is becoming more and more complex,and the problem of reliability becomes more and more obvious.The means and methods of ship reliability analysis and design have not been generally formed,and there are some problems in application and engineering design.Taking a certain type of a patrol boat as an example,this paper uses software to establish the reliability model,carries out the reliability prediction and follow-up work,and integrates the reliability software effectively into the ship design process,it can enhance the relevancy of analysis process,avoid data inconsistency,improve the reliability of equipment effectively,and reduce the difficulty of implementing and popularizing the reliability of warship.