The invention discloses an anti-scaling and corrosion-inhibiting device for an electric submersible pump, and belongs to the technical field of anti-scaling and corrosion-inhibiting. The anti-scaling and corrosion-inhibiting device comprises an upper transport cap, an upper joint, a housing, a middle shaft, a middle connector, a lower joint, a lower transport cap and an induced separating wheel, wherein the housing sleeves the outer part of the middle shaft; the induced separating wheel is arranged between the middle connector and the upper joint; the front end of the induced separating wheel is equipped with a front anti-scaling and corrosion-inhibiting mechanism; and a rear anti-scaling and corrosion-inhibiting mechanism is arranged between the lower joint and the middle connector. The front anti-scaling and corrosion-inhibiting mechanism and the rear anti-scaling and corrosion-inhibiting mechanism are connected in series in an original separator, so that anti-scaling and corrosion-inhibiting are performed on the electric submersible pump; and the front anti-scaling and corrosion-inhibiting mechanism further can be utilized to perform anti-scaling and corrosion-inhibiting on the induced separating wheel, and therefore, scaling and corrosion, on the separator and the electric submersible pump, of oil liquid are relieved, an overhaul period of the electric submersible pump is prolonged, and use effects of the separator and the electric submersible pump are improved.