This island is located on the south-east side of Halong Bay. The Dau Be Island is 500m from Hang Trai Island to the east and 28km from the Bai Chay Tourist Wharf, in an archipelago comprised between the Tra Ngu and Da Le Islands outside Halong Bay (seaport of Lan Ha Bay).

When speaking of the island, it is impossible not to mention Ba Ham Lake, a famous spot which people had known long time ago.