The invention discloses a post type transparent insulator for a high-voltage line. The post type transparent insulator comprises a pressing plate, a flat-top petticoat, a flat-top petticoat central cylinder, big petticoats, a small petticoat, a connecting rod, a metal sleeve, and a bearing bolt which are connected in sequence. According to the transparent insulator provided by the invention, the relatively large flat-top petticoat, the flat-top petticoat central cylinder, the big petticoats and the small petticoat are manufactured by polycarbonate; the connecting rod is made from epoxy resin, so that the insulating effect is greatly improved and the transparent performance is good; the fracture or breakdown failure accidents can be repaired in time, so that the safety operation of the line can be ensured; the set pressing plate is mounted in a clamping manner, so that less workload, relatively high efficiency and low labor intensity are achieved; due to wire slot transverse shallow slots and wire pressing slots or wire convex pressing strip shallow slots, an electric wire wearing phenomenon tends not to happen; the electric wire is fixed reliably, and the waste problem caused by replacement of an aluminum binding wire is prevented; and in addition, the insulator is reasonable in structure, light in weight, safe and reliable in performance, easy to manufacture, relatively low in fabrication cost, easy to mount, and capable of bringing relatively high economic benefit and social benefit.