To provide an erosion control dam for which a gravel temporarily storing function and drift wood capturing ability of a slit type erosion control dam are improved and a disaster prevention function is improved.

On an upstream side front surface of a water conduction port b for which a dam body 2 of a slit type erosion control dam is opened, a restraining wall 3 is erected away from the dam body 2. An inflow port c from a side part is provided between the restraining wall 3 and the dam body 2 and connected by a support beam 4, and flowing water is bent and made to flow out.