Based　on　cylindrical　guided　wave　technology,　a　new　designed　piezoelectric　ring　was　presented　here　and　it　was　put　on　the　cross　section　of　the　hollow　sucker　rod＇s　end　to　excite　or　receive　guided　waves　in　the　hollow　sucker　rod.　By　selecting　and　exciting　specific　guided　mode　at　a　given　frequency,　two　artificial　cracks　(20　mm×1　mm×0.5　mm　and　20　mm　×　1mm×1mm),　which　located　on　the　hollow　sucker　rod,　can　be　found　in　time　domain.　Tie-ins　in　the　hollow　sucker　rod　increase　the　complexity　of　analyzing　the　received　signals.　An　alternative　method　presented　here　is　that　a　fast　guide　mode　was　selected　and　excited　at　a　specific　frequency.　Then,　the　echo　from　cracks　will　appear　the　front　of　the　echo　from　tie-ins　of　the　hollow　sucker　rod　in　the　received　signals.　Some　conclusions　proved　that　the　new　designed　piezoelectric　ring　was　more　effective　than　previous　piezoelectric　transducers　and　it　is　feasible　to　utilize　cylindrical　guided　wave　to　achieve　nondestructive　inspection　on　hollow　sucker　rod.　Copyright　©　2004　by　ASME.