A kind of low frequency electrotherapeutic apparatus of scalable adjustment includes a flexible supporting part and an electrical stimulation unit. The flexibility supporting part has a socket part, which has the wave folding line section of an at least extension apparatus, and each edge stretches unit and is respectively connected with two extended segment with two mutual corresponding extended segments and one and generated the bending segment of deformation by external force. The electrical stimulation unit includes a pulse generating unit, one be electrically connected the pulse generating unit pulse transmission conductor and one connect the pulse transmission conductor electrode portion, the pulse transmission conductor what wave folding line section has the conductive unit in at least one embedded what extension apparatus, and each conductive unit includes the reversion sections of two linkage sections for respectively corresponding extended segment setting and the connected what linkage section and corresponding bending segment setting.一種可伸縮調整的低週波電療裝置，包含有一撓性承載部以及一電刺激單元。該撓性承載部具有一套接部，該套接部具有至少一延伸單元的波浪摺紋區間，每一該沿伸單元具有二相互對應的延伸段以及一分別相連該二延伸段並受外力作用產生形變的彎折段。該電刺激單元包含一脈衝產生部，一電性連接該脈衝產生部的脈衝傳輸導體以及一連接該脈衝傳輸導體的電極部，該脈衝傳輸導體於該波浪摺紋區間具有至少一埋設於該延伸單元內的導電單元，每一該導電單元包含有二分別對應該延伸段設置的連接段以及一相連於該連接段且對應該彎折段設置的反轉段。
