According to SDJ 226 "Crimping technology regulation for overhead transmission line and the grounding wire", when 1000mm2 conductor is crimped, there is serious phenomenon of untwisted strand, combined with the characteristics of 1000mm2 cross-section conductor, make some measures to remedy untwisted strands, these measures are proved effective and feasible by experiments, it plays an active role in improving construction equality of large cross-section conductor.