The invention discloses a high-performance low-wrapage nylon material as well as a preparation method and an application thereof. The high-performance low-wrapage nylon material comprises the following raw materials by weight percent: 46-66% of PA6/66, 1-5% of a flexibilizer, 30-50% of flat glass fiber, and 0.1-1% of a lubricant and an antioxidant. Compared with the prior art, the high-performancelow-wrapage nylon material has the advantages: the PA6/66 copolymerized from hexamethylenediamine, adipic acid and caprolactam is chosen and is low in degree of crystallinity and after shrinkage in comparison with a PA6 material, so that the problem of wrapage caused by uneven after shrinkage is avoided, the glass fiber adopts the flat glass fiber, the flat glass fiber has a better mechanical property in comparison with the conventional glass fiber, the high specific surface area increases the interface bonding force between the glass fiber and a nylon resin, so that the mechanical property of the composite is improved, the flat and thin cross section of the flat glass fiber effectively reduces the problem of wrapage caused by the orientation of the glass fiber in the nylon resin comparedwith the cylindrical cross section of the conventional glass fiber, so that the high-performance low-wrapage nylon material is acquired.