The invention discloses an open type Rogowski coil current sensor convenient for overhead suspending. The open type Rogowski coil current sensor convenient for overhead suspending comprises a current sensor, a rope, a signal transmission line, a main supporting frame, a telescopic inner supporting rod, a suspending supporting rod, a fixed pulley, a pushing plate and a connecting rod, wherein the suspending supporting rod is a hollow structure; one end of the telescopic inner supporting rod sleeves one end of the suspending supporting rod, the other end of the telescopic inner supporting rod is connected to one end of the connecting rod, the side surface at the other end of the connecting rod is connected to one end of the main supporting frame and the fixed pulley; a blocking slot is formed along the axial direction of the connecting rod; one end of the pushing plate is blocked in the blocking slot; one end of the rope is fixed on the pushing plate, the other end of the rope is fixed to the other end of the suspending supporting rod after passing through the fixed pulley, and the signal transmission line is connected to the output end of the current sensor. A user can stand at a low place for suspending the current sensor disclosed by the invention to a high place. Moreover, the open type Rogowski coil current sensor convenient for overhead suspending is simple to operate and high in safety.