Dam

The utility model belongs to the technical filed of the protection and restoration of a wet land, disclosing a dam used for protecting and restoring the degraded wet land, comprising a dam body, wherein the dam body is provided with more than one aquatic life culvert pipe channel; the aquatic life culvert pipe channel is communicated with both inner and outer sides of the dam body. The aquatic lives in the upstream and the downstream of the dam can pass through the dam body of the dam through the aquatic life culvert pipe channel; the biologic relation between the upstream and the downstream water area of the dam is established through the aquatic life culvert pipe channel; therefore, the dam can avoid breaking the water area environment.