The present disclosure provides a liquid crystal display panel composed of red pixel units, green pixel units and blue pixel units that are arranged in the form of matrix. Every adjacent two rows of pixel units form a pixel-unit group. Polarities of pixel units located at the same column in the same pixel-unit group are the same, and polarities of pixel units located at the same column in adjacent two pixel-unit groups are opposite, thus solving problem of color shift at large viewing angles. Polarities of adjacent red pixel units in each row of pixel units are alternately changed and polarities of adjacent blue pixel units in each row of the pixel units are alternately changed to alleviate grainy effect generated on the entire display image, thereby display effect is greatly enhanced. The present disclosure also provides a liquid crystal display device having the liquid crystal display panel.