The invention provides a parameter acquisition method, a pixel point pair selection method and related equipment. The parameter obtaining method comprises the steps that N pixel point sets corresponding to a chrominance prediction block and N pixel point sets corresponding to a brightness prediction block are determined, the chrominance prediction block corresponds to the brightness prediction block, and N is an integer larger than 1; and according to the N pixel point sets corresponding to the chrominance prediction block and the N pixel point sets corresponding to the brightness prediction block, N groups of parameters are acquired, and the N groups of parameters are used for predicting the chrominance value of the chrominance prediction block. According to the invention, the group number of parameter acquisition can be increased, so that the accuracy of the acquired parameters can be improved.