The invention relates to longitudinal and horizontal plate line combined type electrostatic field dust-removing equipment comprising a shell, an inlet smoke box, an outlet smoke box, an ash bucket, discharge electrodes, dust collection electrodes and a shaking device, wherein the ash bucket is arranged below the shell; the discharge electrodes and the dust collection electrodes are arranged in the shell at intervals; the dust collection electrodes are distributed in a longitudinally and horizontally combining manner so as to form a rectangular array structure; the discharge electrodes are distributed in a radial shape and arranged in the center of each rectangular array unit of the dust collection electrodes; each dust collection electrode comprises two parts; the intermediate shapes of longitudinally arranged dust collection electrode sections are straight, and both sides naturally transit to form an arc-shaped wind preventing structure; the intermediate shapes of horizontally arranged dust collection electrode sections are straight, and both sides naturally transit to form the arc-shaped wind preventing structure, therefore the dust collection electrodes with the section shapes can enhance the critical sparking voltage, strengthen the electrostatic fields and prevent the collected dust particles from secondarily flying through the arc-shaped wind preventing structures.