An exemplary manufacturing method for a battery is provided in the present invention. The manufacturing method includes step S1: providing a high polymer solution; step S2: providing a negative-electrode structure; step S3: providing a separation structure; step S4: assembling the negative-electrode and the separation structure into a housing; and step S5: inserting a current collector into the housing and filling a positive-electrode material therein to form a positive-electrode structure. At least one of the negative-electrode structure and the positive-electrode structure comprise chlorophyll. Thus, the manufacturing process of the battery is simple, and economical, and natural and non-toxic substances are used. Unlike the manufacturing process of conventional batteries, the battery manufactured according to embodiments of the present invention will not cause environmental pollution even when it is discarded after being used.