In the practice of buying and selling crabs in the village of Meunasah Paya, the fishermen sell all the crabs they catch without sorting them out, whether they are small, large, laying eggs or not, and this is not in accordance with Permen KP number 12 of 2020 which only allows crabs above. 150 grams and crabs that are not in egg-laying condition. The formulation of the research problem is how the practice of buying and selling crabs in Meunasah Paya village, Manyak Payed district, Aceh Tamiang district and how is Sad Adz Dzariah's review and Regulation of the Minister of Maritime Affairs and Fisheries of the Republic of Indonesia Number 12 of 2020 on the practice of buying and selling crabs in Meunasah Paya village, Manyak Payed district, Aceh district Tamiang. The purpose of the study was to find out the practice of buying and selling crabs in Meunasah Paya village as well as a review of Sad Adz Dzariah and KP Ministerial Regulation number 12 of 2020 on the practice of buying and selling crabs in Meunasah Paya village, Manyak Payed district, Aceh Tamiang district. This research includes field research (Field Research) with qualitative descriptive analysis method. The results of the study concluded that in Meunasah Paya village, crab fishermen sell all the crabs they catch to collectors without looking at the standardization of Ministerial Regulation No. 12 of 2020 which has been determined whether large or small crabs, laying eggs or not, will still be sold to collectors. According to sad adz dzariah, the law of buying and selling crabs in Meunasah Paya village is divided into two, namely some are prohibited because they are not in accordance with the candy and this will damage the crab population in nature and some are not prohibited. Meanwhile, according to Permen KP Number 12 of 2020, the sale and purchase of crabs in the village of Meunasah Paya is also divided into two, namely, some are appropriate and some are not.