The invention discloses a power match line clamp for power transmission and distribution. The power match line clamp comprises a base tube, a core tube, a set of pressing claw assembly and a plane nut, wherein the inner circumferential wall of the base tube is equipped with a pressing boss, a radial limiting slide hole is formed in the tube wall of the core tube, and the inner circumferential wall of the core tube is equipped with an annular blocking table; the pressing claw assembly comprises multiple pressing claws, and each pressing claw comprises a pressing plate part, a guide slide block part and a driving threaded part; the plane nut is disposed in the tube chamber of the core tube in a rotatable manner; the plane nut comprises a plane threaded part which is meshed and fit with the driving threaded part of each pressing claw; and an installation screw hole equipped with a built-in temperature sensing device is formed in the base tube. The power match line clamp disclosed by the invention can effectively prevent loosening.