The invention discloses a hardware implementation system and a method for high-performance elliptic curve digital signature and signature verification, and belongs to the technical field of information security. In order to solve the problems that in the prior art, an ECDSA algorithm is high in complexity, long in calculation time consumption and large in hardware acceleration difficulty, the system comprises a signature verification controller, a scalar multiplication controller, a bottom layer operation controller and an operation array for achieving various modular operations, and a novel modular multiplication array structure is provided in the operation array. The scheduling of point doubling and point adding calculation is facilitated, and the performance is high in unit area. According to the invention, point doubling, point addition, modular multiplication operation, modular addition operation, modular subtraction operation, modular inverse operation, modular shift operation and other underlying operations are integrated together, resource sharing of a calculation path is realized to the greatest extent, and high-performance implementation of modular multiplication is combined, so that a high-performance elliptic curve digital signature and signature verification algorithm is realized under relatively low hardware overhead.