This article is mainly multi-inheritance the programming method to the analysis for C++.Multi-inheritance is one which of mechanisms the very few several languages realize,it needs the performance guarantee and complex object structure processing and the visit skill.Has structure which multi-inheritance after procedure scale expansion,will become under the existing programming method beyond redemption,therefore only then the very specialized software exploiter will systematize uses multi-inheritance,in the C++ standard store used some multi-inheritance.It was the commercialized resources.But future C++ tendency will be must desalinate multi-inheritance.