Fence anti-theft door and window lock

The utility model provides a fence anti-theft door and window lock. A lock body is arranged on the right side of a lock bar tube. A lock bar is arranged inside the lock bar tube. The middle of the lock bar is connected with a U-shaped lock tongue. Lock pins are arranged at the upper end and the lower end of the lock bar, and can extend out of the lock bar tube and enter door side lock holes to achieve the function of a lock pin door. The lock body is hidden into a left side lock body hidden tube, namely, an anti-theft net station frame tube. A lock head is exposed from the lock body hidden tube. A decorative cover is sleeved on the exposed lock head. The fence anti-theft door window lock is compact in structure, small and exquisite, and firm. Moreover, the lock body is hidden into the hidden tube, the U-shaped lock tongue and the lock bar are connected and arranged inside the lock bar tube, only the upper lock pin and the lower lock pin extend out of and enter the door side lock holes, the decorative cover is