A kind of electrotherapeutic apparatus for assisting contracting muscles includes the elastic shrinkage band in an electro medical apparatus ontology and the setting what electro medical apparatus ontology. Wherein, the electro medical apparatus ontology includes one first electrical stimulation unit of the pulse electrotherapy for attaching what user skin and exporting dissimilar polarities and the signal line connection of one second electrical stimulation unit and difference electrical communication first electrical stimulation unit and second electrical stimulation unit. The elastic shrinkage band includes the first assembling end of fixed what first electrical stimulation unit, second assembling end of one fixed what second electrical stimulation unit and a connection first assembling end and the second assembling end simultaneously provide the elastic force section that a contraction power gives muscle between first electrical stimulation unit and second electrical stimulation unit.一種輔助收縮肌肉的電療裝置，包含有一電療器本體以及一設置於該電療器本體中的彈性收縮帶。其中，該電療器本體包括有貼附於使用者皮膚並輸出相異極性的電療脈衝的一第一電刺激單元與一第二電刺激單元，以及一分別電性連通該第一電刺激單元與該第二電刺激單元的訊號連接線。該彈性收縮帶包含一固定於該第一電刺激單元的第一組裝端，一固定於該第二電刺激單元的第二組裝端，以及一連接該第一組裝端與該第二組裝端並提供一收縮作用力予該第一電刺激單元與該第二電刺激單元之間肌肉的彈力段。
