The invention discloses a system device for preparing a sulphonate surfactant through a supergravity sulfonation method and application. The system device comprises batching systems, a supergravity reaction system, heat removing systems and a post-processing system. The batching systems comprise the sulfonation agent batching system, the organic solvent for heat removing batching system and the raw material waiting for being sulfonated batching system; the supergravity reaction system comprises a supergravity reactor and a feeding device; the heat removing systems comprise the outer heat removing system and the cold shock heat removing system; and the post-processing system comprises a circulating stirring system, a circulating pump, an overflow aging system, a neutralization system, a water-separating system and a solvent recovery system. The system device is adopted to conduct a sulfonation reaction, diluted gaseous or liquid sulfur trioxide serves as a sulfonating agent, so that the reaction is controllable, and the reaction heat quantity can be removed timely. According to the system device for preparing the sulphonate surfactant through the supergravity sulfonation method, the supergravity technology is applied in the process of sulfonation quick reaction, so that raw materials can be evenly distributed rapidly, the occurrence probability of a side reaction is reduced, and the product quality is improved.