The invention discloses a processing system for decreasing the viscose particle number in a spinning technology, and relates to the technical field of viscose filament spinning equipment in textile industry. The processing system comprises a xanthating machine, a rough grinding machine, a dissolving barrel, a dissolving barrel internal circulation device and a dissolving barrel external circulation device; xanthated viscose is subjected to rough grinding through the coarse grinding machine, large viscose balls are finely ground, and then the finely-ground viscose enters the dissolving barrel; the viscose is subjected to fine grinding through the dissolving barrel internal circulation device; the viscose is ground through the dissolving barrel external circulation device, and small particles in the viscose are subjected to fine grinding. Neither blocking of filter material filtering pore channels nor blocking of spinning nozzles can be caused. The problems that due to the fact that blocking of the spinning nozzles is caused, viscose blocks are formed, and rolls are wound by broken filaments are avoided.