The present invention provides a cylindrical secondary battery with excellent output characteristics by using a current-collecting lead having excellent current-collecting performance to reduce internal resistance. The current-collecting lead (10) for being welded to a collector welded to an upper portion of an electrode group and also to a sealing assembly of an cylindrical secondary battery (A) includes: a flat surface part (11) welded to the collector, and a top part (12) formed to be curved and protrude approximately in the shape of a dome from the flat surface part and welded to the sealing assembly. A central opening (12a) is formed at a central portion of the top part. Around the central opening, a plurality of welding projections (12c) are formed to protrude toward the sealing assembly. The welding projections serve as welding spots to the sealing assembly. The top part is deformed by a pressing force from the sealing assembly to be brought into surface contact with a corner portion of a convex portion formed on a lower surface of the sealing assembly.