A crimping pliers (1) includes a base (10), a guiding plate (20), a crimping member (30) and a compression handle (40). The base (10) includes a receiving space (11), a pivotal attachment portion (13) and an actuation section (14) having a crimping opening (141). The guiding plate (20) with a guiding hole (21) is installed in the receiving space (11) and corresponding to the crimping opening (141). The crimping member (30) is installed inside the receiving space (11) and comprises a connecting rod (31) attached to a sliding member (32) having a crimping portion (322) connected to the guiding hole (21) and corresponding to the crimping opening (141). The compression handle (40) is configured to drive the crimping portion (322) to move inside the crimping opening (141). Therefore, a uniform compression force is ensured to be applied to the connector and the conductive wire by the crimping portion.