Magnetostrictive　sensors　(MsS)　are　widely　used　to　generate　ultrasonic　guided　waves　of　SH0　mode　for　the　purpose　of　detecting　defects　in　plate-like　structures.　An　MsS　commonly　employs　a　rectangular　magnetostrictive　strip　and　a　sensor　unit　(including　detection　coil　and　magnet)　to　generate　SH0　waves.　However,　the　effect　of　coverage　range　of　static　magnetic　field　(Ls)　and　dynamic　magnetic　field　(L-D)　on　the　SH0　wave　generation　direction　has　not　been　fully　explored.　So　far,　the　cases　of　L-S＜＞L-S　are　seldom　discussed　in　the　development　of　MsS　for　generating　SH0　mode.　In　this　study,　the　key　factor　governing　the　direction　of　SH0　mode　generated　by　FeCo　strip-based　MsS　was　experimentally　clarified.　The　transition　phenomenon　in　the　generation　direction　of　SH0　wave　was　observed　while　the　combination　parameters　crossing　the　control　line　of　Ls　approximate　to　L-D.　The　phenomenon　could　be　interpreted　by　the　alterations　in　the　operation　mechanism　of　Wiedemann　effect　and　reversed　Wiedemann　effect.　As　a　result,　the　generation　direction　of　SH0　mode　could　be　tuned　along　the　static　magnetic　field　(Ls＜＞L-D)　or　the　direction　of　both　static　and　dynamic　magnetic　fields　(Ls　approximate　to　L-D).　The　findings　in　this　study　is　of　benefit　for　guiding　the　design　of　MsS　array　with　the　tunable　generation　direction　of　SH0　mode.