Abstract: A curved battery and manufacturing method thereof, includes the following steps: electroplating an electrode sheet, rolling said electrode sheet along its long side, first sealing, heating, pouring in electrolyte fluid, charging, vacuuming, second sealing, and shaping. Wherein, the electrode sheet is of a long strip shape, with its outside wrapped with separation film, to separate the positive electrode and negative electrode. While perform rolling, it is performed along its long side, to remove the stress that may occur after the product is produced. Then, sealing is performed by using films made of water resistant and heat resistant material for sealing at least three side edges. Pour in electrolyte fluid of LiPF6 in an overall temperature of 75 degrees. Afterwards, charging the electrolyte fluid, perform vacuuming, and perform second sealing. Finally, using heated tools to bend the half-finished battery into shape, to form a curved battery having uniform curvature.