The move will help in stabilising domestic prices that have fallen below the minimum support level and are hurting farmers.
The Directorate General of Foreign Trade (DGFT), under the commerce ministry, also said import of this dal is subject to annual quota of three lakh tonnes.
It, however, said this restriction will not apply to the government's import commitments under any bilateral and regional agreement.
Moong production touched a record 2.07 million tonnes (mt) in 2016-17 crop year that ended June as against 1.59 mt in the previous fiscal.
India is the world's largest pulse producer and importer.