The invention relates to a novel MC nylon and a modification method, especially relates to a production method of nanometer samarium oxide modified MC nylon slide blocks, and belongs to the technical field of plastics. The novel MC nylon comprises, by weight, 100 parts of a master batch caprolactam, 0.5-1.0 part of nanometer samarium oxide, 0.12-0.2 parts of an accelerant sodium hydroxide, 0.3-0.7L of a curing agent TDI, 2-3 parts of molybdenum disulfide, 0.5-0.8parts of graphite, and 0.3-0.5 parts of boron nitride, wherein molybdenum disulfide, graphite and boron nitride are used as a solid lubricant. The method concretely comprises the following steps: heating a die, adding materials to the die, carrying out curing molding, carrying out internal press treatment, and machining. The above product can well transmit born external stress, can initiate matrix yielding, and consumes a large amount of impact energy in order to obtain the toughness and the strength. A centrifuge casting technology adopted in the invention eliminates the internal pores of the product, and overcomes the product quality problem caused by internal pores, inclusion and other defects of the cast steel piece slide blocks.