The present invention provides a liquid crystal display (LCD) module and a front frame structure thereof. The LCD module comprises a backlight module, a liquid crystal panel and a front frame structure. The front frame structure comprises a plurality of corner frame components, and the corner frame component comprises a top portion, a first side portion and a second side portion, all of which are perpendicular to each other. Each of the corner frame components is fixed on one corner of the backlight module, so as to fix the liquid crystal panel on the backlight module. The present invention can save material and achieve the object of the compactness design, and can fit different size specifications of the LCD module.