The　temporal-spatial　focusing　effect　of　the　time　reversal　method　on　the　guided　wave　inspection　in　pipes　is　investigated.　A　steel　pipe　model　with　outer　diameter　of　70　mm　and　wall　thickness　of　3.5　mm　is　numerically　built　to　analyse　the　reflection　coefficient　of　L(0,2)　mode　when　the　time　reversal　method　is　applied　in　the　model.　According　to　the　calculated　results,　it　is　shown　that　a　synthetic　time　reversal　array　method　is　effective　to　improve　the　signal-to-noise　ratio　of　a　guided　wave　inspection　system.　As　an　intercepting　window　is　widened,　more　energy　can　be　included　in　a　re-emitted　signal,　which　leads　to　a　large　reflection　coefficient　of　L(0,2)　mode.　It　is　also　shown　that　when　a　time　reversed　signal　is　reapplied　in　the　pipe　model,　by　analysing　the　motion　of　the　time　reversed　wave　propagating　along　the　pipe　model,　a　defect　can　be　identified.　Therefore,　it　is　demonstrated　that　the　time　reversal　method　can　be　used　to　locate　the　circumferential　position　of　a　defect　in　a　pipe.　Finally,　through　an　experiment　corresponding　with　the　pipe　model,　the　experimental　result　shows　that　the　above-mentioned　method　can　be　valid　in　the　inspection　of　a　pipe.