We present a testing approach which is a partially automated, partially manual inspection process that reports defects in C++ source code. In this paper we considered one of the faults type- uninitialized Variable- which the approach can detect. Uninitialized Variable is a common kind of error in programs written in C++, it often causes error result or system collapse. This paper analyses the classical C++ uninitialized variable errors, and describes a detecting method of uninitialized variable errors combining the advantage of ASI technology which based on static analysis.