The invention discloses a pair of linemen's pliers. The pair of linemen's pliers comprises two pliers handles connected in a hinged manner, wherein a clamp nose is connected to the front end of each pliers handle; a clamp mouth is formed in the front inner side of each clamp nose; one side of the front end of one clamp nose is connected with a connecting pin in a counter-rotating manner; a penetration hole is formed in the connecting pin; a screw is movably inserted into the penetration hole in a penetrating manner; one end of the screw is integrally and fixedly connected with a catch; the external diameter of the catch is larger than the diameter of the penetration hole; one side of the front end of the other clamp nose is connected with a fastening pin in a counter-rotating manner, and the connecting pin and the fastening pin are in bilateral symmetry and are located on the same side of the clamp noses; a screw hole capable of being in threaded connection with the screw is formed in the fastening pin. The pair of linemen's pliers integrates the functions of both a spanner and pincers, and the total weight of the pair of linemen's pliers is reduced, so that carrying is facilitated, tool replacement during aerial working of constructers is avoided, and the use is safe and convenient.