The invention discloses an AIO LCD computer. The AIO LCD computer comprises a case, an LCD and a bottom plate. The case is composed of a front screen box and a rear case body which are connected with each other, and a backboard is arranged inside the case; the LCD is connected with the backboard; the rear case body is hinged to the bottom plate through rear supports; both sides of the front lower portion of the front screen box are in contact with the upper surface of the bottom plate; the position close to the middle of the rear case body is provided with power source and CPU (central processing unit) fan radiation holes; the right side of the rear housing is provided with a graphics card ventilation cover which is projected from the body of the rear case body and provided with graphics card fan radiation holes; the upper side, the left side and the right side of the rear case body are provided with ventilation radiation holes; the bottom of the rear case body is provided with an opening, the front screen box is provided with a power switch, and the rear case body is provided with function keys. According to the AIO LCD computer, the case is high in structural strength and good in electrostatic shielding effects, radiation resisting effects and heat dissipation effects, angle adjustment can be performed conveniently and reliably, and internal dedusting can be facilitated; the whole computer is thin in thickness and can be fixed or placed on a flat surface or a wall conveniently and reliably to save space.