NOVELTY - A high-speed spinning nylon 6-chip comprises (in wt.%) caprolactam (105-115), surface-treated barium sulfate (0.001-0.1), molecular weight regulator (0.2-2) and light stabilizer (0.05-0.5).    USE - High-speed spinning nylon 6-chip is used for nylon wire.    ADVANTAGE - The high-speed spinning nylon 6-chip has excellent spinnability.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of high-speed spinning nylon 6-chip. Barium sulfate dispersion liquid is prepared by surface treating powder form, slurry form or water suspension form barium sulfate raw material, using surface treating agent. The barium sulfate dispersion liquid, liquid caprolactam and water are mixed in the ratio of 1-20:1-100:1-100 in a stirring device at 20-95 degrees C and stirred for 0.5-10 hours to obtain 5-20 %mass of barium sulfate dispersion liquid. The solid powder is wet ground in mill to disperse the agglomerate. Then, stable barium sulfate suspension is obtained after 12-48 hours by precipitation. Molecular weight regulator is dissolved in 50-100% of molten caprolactam or caprolactam aqueous solution and stirred, to obtain a dispersion liquid of molecular weight regulator (2-50%). Then, light stabilizer dispersion (2-50%) is prepared by dissolving light stabilizer in 0-50% of caprolactam aqueous solution or water, stirring and dispersing. The continuous polymerization of dispersion is carried out, pelletized, extracted and dried to obtain optical nylon 6-chips. Caprolactam or caprolactam aqueous solution after measuring barium sulfate dispersion liquid, molecular weight regulator and suspension or dispersion light stabilizer, are mixed in static mixer, added to polymerization tower and polymerized at 240-280 degrees C by ring-opening polymerization. The polymer is sliced into particles by the melt pump through the cast strip plate. The obtained particles are extracted in pure water at 100-l20 degrees C, reduced to 0.5% or less, dried with nitrogen at 110-150 degrees C to obtain the dry high-speed spinning nylon 6-chip particles having water content of 0.05% or less.