The present invention is a power transmission switching device comprising a patch cord set and a transmission line set； the patch cord set comprises at least a first power connector, a patch cord and a adapter assembly, and the first power connector Connecting a battery through the patch cord and the adapter assembly； the transmission line group includes a transmission line and a second power connection head, and the second power connection head is detachably connected to the first power connection head, and has a waterproof effect, so Splashing also prevents rusting of the two power connectors； in addition, the patch cord set can be used as an extension cord to keep the adapter assembly and the battery away from the side of the boat to prevent the battery head from being splashed by water； The adapter provides multiple first power connectors to power multiple fishing rods at the same time, thereby avoiding the effects of multiple messy wiring around the battery.本創作係電源傳輸轉接裝置，其包含一轉接線組及一傳輸線組；轉接線組包含至少一第一電源連接頭、一轉接線及一轉接頭組件，第一電源連接頭藉由轉接線及轉接頭組件連接一電瓶；傳輸線組包含一傳輸線及一第二電源連接頭，第二電源連接頭可分離地連接第一電源連接頭，且具有防水效果，因此被水噴濺也可避免兩電源連接頭生鏽；此外，轉接線組可作為延長線使用，使轉接頭組件與電瓶遠離船邊，以避免電瓶的樁頭被水噴濺；再者，於轉接座設置多個第一電源連接頭便可同時對多個釣竿供電，藉此可避免電瓶周圍有多條雜亂的接線造成影響。
