Several methods to extend destination gamut were studied for the high fidelity color reproduction in this paper, for instance, gamut mapping methods dependent on new display technologies, improving paper surface performances and using high fidelity printing of more than four color inks. The above methods were classified into two classes, soft method and hard method. The characteristics of the above methods to extend destination gamut were analyzed and the extension results were compared. The ranges, results and mechanisms of the gamut extension made by the two types of methods were different. The results help to make a further study on the methods to achieve high fidelity color reproduction and to extend the destination gamut, then to perceive the best visual effect in color transmission process.