A liquid crystal display device of horizontal electric field type and a fabricating method thereof is provided.The liquid crystal display device includes a plurality of gate lines. Data lines cross in such a manner to insulate with the gate lines to define a pixel area. A first short preventive hole is arranged between a (n−1)th gate line and a (n)th gate line of the plurality of gate lines. And a bifarious pixel area is arranged between the (n)th gate line and a (n+1)th gate line of the plurality of gate lines.