Based on the ICC standard in the colour management of LCD monitor, the colour space is divided into 512 columns through the uneven division of colour space. Each column has a precise and multi-parameter measurement by the GretaMacbeth Eye-One Pro Spectrometer of X-Rite incorporation. Then the monitor colour Gamut, time, space and independence of the channel are deeply researched and analyzed according to the experimental database. The colour profile of LCD monitor is described according to the colour space of ICC. It also analyzed that LCD colour profile has the influence on the monitor colour image.