The invention relates to the field of high-voltage power transmission and transformation, particularly to a flexible assembly for high-voltage cable power transmission. The flexible assembly for high-voltage cable power transmission comprises an insulator fixing component and a cable directing component, wherein the insulator fixing component comprises an upper fixing plate and a lower fixing plate which are matched and connected with each other, a mounting through hole for fixing an insulator is formed at the center of each of the upper fixing plate and the lower fixing plate, a flashover preventing shield is arranged at the top of the upper fixing plate, first linear slots which are evenly distributed in parallel are formed at the top of the upper fixing plate, a T-shaped slot is formed at the bottom of the upper fixing plate and is internally provided with a fastening bolt which can slide relative to the T-shaped slot, the cable directing component comprises a left arc-shaped plate and a right linear slot plate which are integrated into a whole, second linear slots are arranged at the top of the right linear slot plate, a through hole is formed at the left end of the left arc-shaped plate, the fastening bolt is bolted to a fastening nut after passing through the through hole, and finally the fastening nut is screwed down to connect and fix the insulator fixing component and the cable directing component together. The flexible assembly for high-voltage cable power transmission is simple in structure; with adoption of the flexible assembly, a high-voltage cable can be bent flexibly and bird damage can be prevented.