Lead word box for transillumination of fuel rod

The invention belongs to the technical field of nuclear power, and particularly relates to a lead word box for transillumination of a fuel rod. According to the lead word box, each lead word can enter the sliding groove from the top end of the sliding groove and slide down along the sliding groove, finally, the lead words are stopped at the position of the blocking plate after being blocked by the blocking plate, and the blocking pieces can prevent the lead words sliding down in the sliding grooves from reversing or falling off. The character of each lead word can be completely exposed in the gap between the baffle plate and the baffle plate, so that the placement range of the adjacent lead words is highlighted, the identification degree is improved, and the lead words are easier to distinguish; meanwhile, manual and automatic lead word replacement is met; the lead word replacement efficiency is improved by 50%, and the lead word replacement accuracy is improved by three times. 本公开属于核电技术领域，具体涉及一种用于燃料棒透照的铅字盒。本