Abstract: A window grille latch device comprising an arm with a hollow tube which has a pair of steel balls received in a pair of holes formed in the hollow tube, a latch means having a inner hollow tube and a outer hollow tube to receive the hollow tube, a convex ring recess formed in the inner hollow tube to receive the steel balls, a slide bar received in the inner hollow tube to contact with the steel balls, a cable with a cover connecting with the rear end of the slide bar and a control means connecting to the cable for releasing the latch means.