The invention relates to an anti-drop ground wire clamp which is mainly used for hanging a ground wire in an on-site safety measure, and plays a role in preventing the ground wire from dropping in a ground wire hanging process. The body of the anti-drop ground wire clamp is designed to be shaped like a question mark; an opening of the body shaped like the question mark is movably provided with a limiter; the limiter is connected with the body through a connecting rod; the unlocking of the opening is realized mainly by means of the disk-shaped limiter; the unlocking limiting function is realized through the cooperative operation of an insulating rod connector. Due to the adoption of the design, the ground wire can be located in an annular sealed space after being hung, and the unique outlet is sealed, so that the workload is not increased, the working difficulty is not improved, and meanwhile, the possibility that the ground wire drops is fundamentally avoided, thus the personal safety of a maintainer is ensured.