To provide a fall preventive fence for roof work capable of reducing manufacturing cost with a simple structure while surely preventing falling of materials and a fall of a worker from its clearance by blocking up the clearance formed between the tip of a roof of a building and a temporary scaffold.

This fall preventive fence for the roof work is formed by arranging a locking tool 2 locked on a horizontal pipe P2 of the temporary scaffold K in one side edge part of a rectangular fence body 1. The other side edge part side of the fence body 1 is supported on the roof R by locking the locking tool of the one side edge part of the fence body 1 on the horizontal pipe P2 of the temporary scaffold K.