Provided are a curved battery and a manufacturing method thereof. The curved battery includes an arc protection member, a battery unit and a conductive material. The battery unit is disposed in the protection member and has a shape corresponding to the protection member. The battery unit includes a first electrode layer, a second electrode layer, a first conductive handle, a second conductive handle, a first isolation layer and a second isolation layer. The first conductive handle and the second conductive handle point to directions perpendicular to an axial direction of the battery unit and extend out of the protection member via two openings of the protection member. Thus, the curved battery is allowed with a large curvature that is less likely to cause damages of the battery unit.