The invention relates to a small grain salt production process without additives, which includes steps of halogen extraction and transport, purification, evaporation and crystallization, centrifugal dehydration, drying (salt temperature 500C), belt transportation, PH adjustment to weak alkaline, ton package packaging, temporary storage, small package feeding, automatic packaging machine packaging, and product storage. The invention increases the circulation of cold water flow in the drying process to ensure that the temperature of dry salt is below 50 degrees Celsius, and adjusts the PH value before packaging to ensure that the salt is mildly alkaline. The ton bag is first used for packaging, and the ton bag is stored in a clean warehouse for 13 days. The ton salt temporarily stored is lifted by a bucket conveyor to a small salt producer without additives on the belt line of small packaging Art, including the steps of halogen extraction, purification, evaporation and crystallization, centrifugal dehydration, drying (salt temperature 500C), belt transportation, PH adjustment to weak alkaline, ton package packaging, temporary storage, small package loading, automatic packaging machine packaging, product storage. The invention increases the circulation of cold water flow in the drying process to ensure that the temperature of dry salt is below 50 degrees Celsius, and adjusts the PH value before packaging to ensure that the salt is mildly alkaline. During packaging, tons of bags are first used for packaging and stored in a clean warehouse temporarily for 13 days. The temporary tons of salt are lifted to the conveyor belt of small packaging by a bucket conveyor