An electronic device (100) and a wearable device (10) are disclosed. The electronic device includes: a casing (110); a main board (140); and at least one fixing member (320) fixing the main board (140) to the casing (110), having a first end connected to the main board (140) and a second end exposed from the casing (110), and configured to charge the electronic device (100) or transmit data of the electronic device (10). The wearable device (10) includes the electronic device (100) and a strap (200) connected to a middle frame (120) of the electronic device (100). The fixing member (320) has a fixing function is also capable of transmitting data or charging, thereby decreasing the number of openings in the casing (110), improving the overall aesthetics of the electronic device (100), and reducing the overall weight.