The invention relates to an image processing method for eliminating a guardrail in an electric power component photo. The image processing method comprises the following steps that: S100, a photo is obtained; S200, the input of a user is obtained; S300, whether a portion which is considered to contain a guardrail by the user is a portion actually containing the guardrail is judged according to the input of the user; S319, the general extension direction of the guardrail is judged, if the general extension direction of the guardrail is a vertical direction, the method shifts to step S320; S320, a group of horizontal sampling lines is utilized to perform sampling on an amplified region, so that a group of sampling line segments can be obtained, and the pixel values of all points on the sampling line segments are updated; and S330, a guardrail-removed electric power component photo is displayed on a display device.