The power line consists of three wires, three-phase in the plane z=d over the earth surface. This study was carried out on the equally spaced horizontally conductor configuration. The central conductor 1 lies in the plane y=0 while conductors 2 and 3 in the planes y=±3 m, respectively. The components of electromagnetic field at all points near high- voltage transmission line is determined in analytical method. This study shows that the electric field strength has a maximum value at position y= ±9m, but the values of the magnetic induction field is of the order micro -tesla.