The survey results molluscs of 6 wards in the city of Thainguyen area from 01/2012 to 12/2012 has identified 22 species of Molluscs of 2 orders, 7 families and 11 breeds. Specifically Eulamellibranchia order has 10 species, 6 breeds, 5 families. Prosobranchia order has ]2 species, 9 breeds and 4 families.