A bonding device for forming a wearable device includes a first bonding structure and a second bonding structure. The first bonding structure has a corresponding plurality of first mechanical structures and corresponding plurality of first electrical contacts to form a first mechanical bond and a first electrical bond, and includes a first wire connecting member, a first bonding member and an elastic member. The second bonding structure includes a signal connection line, wherein the first wire connection member, the first bonding member, and the elastic member form the first mechanical bond by the corresponding plurality of first mechanical structures； The first wire connecting member, the first bonding member, and the elastic member form the first electrical bond by the corresponding plurality of first electrical contacts. The elastic member is electrically connected to the signal connecting wire, and combines the first bonding structure and the second bonding structure.一種用於形成一穿戴裝置的結合裝置，其包含一第一結合構造、以及一第二結合構造。該第一結合構造具有相對應的複數第一機械結構與相對應的複數第一電性接點而來形成一第一機械結合與一第一電性結合，且包含一第一導線連接構件、一第一結合構件、以及一彈性構件。該第二結合構造包含一訊號連接線，其中該第一導線連接構件、該第一結合構件、以及該彈性構件藉由該相對應的複數第一機械結構而來形成該第一機械結合；該第一導線連接構件、該第一結合構件、以及該彈性構件藉由該相對應的複數第一電性接點而來形成該第一電性結合；該彈性構件與該訊號連接線電性連接，而來結合該第一結合構造與該第二結合構造。
