To provide a gate with a crime-prevention device for preventing the intrusion of a suspicious person who tries to open and climb over the gate installed in the entrance/exit of the site of a housing for making intrusion.

This gate 1 with a crime-prevention device includes: a cap piece 4 installed in a horizontal frame member 3a at the upper edge of a gate 2; a contact member 5 connected from the cap piece 4 to the lower part in a vertical frame member 3b of the gate 2; and a contact piece 7 connected to a grip 6 formed on the external face of the vertical frame member 3b inside the vertical member 3b, and furthermore, includes a detection means 8 in the vertical frame member 3b, which is installed in the movable region of the contact member 5 and the contact piece 7, and configured to detect when contacting with either the contact member 5 operating while being interlinked to the cap piece 4 moving downward against the energizing force of an elastic member S or the contact piece 7 operating while being interlinked to the movement of the grip 6 in unlocking the temporarily locked gate 2.