The invention discloses a recycling method for trichloroethane in the production process of sucralose. The recycling of the trichloroethane is realized in the cooling process after a chlorination reaction is finished by distillation under reduced pressure and reflux aeration and deacidification, so that the amount of recycling the trichloroethane and the treatment pressure of the trichloroethane after quenching are greatly reduced, and the aims of saving energy and reducing consumption are achieved. According to the recycling method disclosed by the invention, the influence on normal operation of production is avoided; a recycled trichloroethane finished product is circularly used for next-generation chlorination reaction without influence on the conversion rate of sucralose-6-ethyl ester, thereby greatly reducing the production cost.