Quickly-installed anti-theft display device

The utility model discloses a quick-installation anti-theft display device, which comprises a first product burglar alarm used for display, power supply and theft prevention of mobile phone products, a power cable used for being externally connected with a power adapter is arranged on one side wall of the first product burglar alarm in a penetrating manner, and magnetic connector female seats are arranged on two adjacent side walls of the side wall, where the power cable is arranged in the penetrating manner, of the first product burglar alarm; one side wall of the second product burglar alarm is provided with a first magnetic attraction connector male seat, so that the second product burglar alarm is electrically connected with the first product burglar alarm through the first magnetic attraction connector male seat and a first magnetic attraction connector female seat; and one side wall of the third product burglar alarm is provided with a second magnetic connector male seat, so that the third product burgl